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    Overview: 1 questions will be solved this time.Among them
           ☆1 equations

[ 1/1 Equation]
    Work: Find the solution of equation 0.45/(2.25−x)+0.03/(1−x)+0.033/(0.33-x)+0.084/(0.21-x) = 1 .
    Question type: Equation
    Solution:Original question:
     
9
20
÷ (
9
4
x ) +
3
100
÷ (1 x ) +
33
1000
÷ (
33
100
x ) +
21
250
÷ (
21
100
x ) = 1
     Multiply both sides of the equation by:(
9
4
x )
     
9
20
+
3
100
÷ (1 x ) × (
9
4
x ) +
33
1000
÷ (
33
100
x ) × (
9
4
x ) +
21
250
÷ (
21
100
x ) × (
9
4
x ) = 1(
9
4
x )
    Remove a bracket on the left of the equation::
     
9
20
+
3
100
÷ (1 x ) ×
9
4
3
100
÷ (1 x ) × x +
33
1000
÷ (
33
100
x ) × (
9
4
x ) +
21
250
÷ (
21
100
x ) = 1(
9
4
x )
    Remove a bracket on the right of the equation::
     
9
20
+
3
100
÷ (1 x ) ×
9
4
3
100
÷ (1 x ) × x +
33
1000
÷ (
33
100
x ) × (
9
4
x ) +
21
250
÷ (
21
100
x ) = 1 ×
9
4
1 x
    The equation is reduced to :
     
9
20
+
27
400
÷ (1 x )
3
100
÷ (1 x ) × x +
33
1000
÷ (
33
100
x ) × (
9
4
x ) +
21
250
÷ (
21
100
x ) × (
9
4
x ) =
9
4
1 x
     Multiply both sides of the equation by:(1 x )
     
9
20
(1 x ) +
27
400
3
100
x +
33
1000
÷ (
33
100
x ) × (
9
4
x )(1 x ) +
21
250
÷ (
21
100
x ) × (
9
4
x ) =
9
4
(1 x )1 x (1 x )
    Remove a bracket on the left of the equation:
     
9
20
× 1
9
20
x +
27
400
3
100
x +
33
1000
÷ (
33
100
x ) × (
9
4
x )(1 x ) +
21
250
=
9
4
(1 x )1 x (1 x )
    Remove a bracket on the right of the equation::
     
9
20
× 1
9
20
x +
27
400
3
100
x +
33
1000
÷ (
33
100
x ) × (
9
4
x )(1 x ) +
21
250
=
9
4
× 1
9
4
x 1 x (1 x )
    The equation is reduced to :
     
9
20
9
20
x +
27
400
3
100
x +
33
1000
÷ (
33
100
x ) × (
9
4
x )(1 x ) +
21
250
÷ (
21
100
x ) =
9
4
9
4
x 1 x (1 x )
    The equation is reduced to :
     
207
400
12
25
x +
33
1000
÷ (
33
100
x ) × (
9
4
x )(1 x ) +
21
250
÷ (
21
100
x ) × (
9
4
x )(1 x ) =
9
4
9
4
x 1 x (1 x )
     Multiply both sides of the equation by:(
33
100
x )
     
207
400
(
33
100
x )
12
25
x (
33
100
x ) +
33
1000
(
9
4
x )(1 x ) +
21
250
÷ (
21
100
x ) × (
9
4
x )(1 x ) =
9
4
(
33
100
x )
9
4
x (
33
100
x )1 x (1 x )(
33
100
x )
    Remove a bracket on the left of the equation:
     
207
400
×
33
100
207
400
x
12
25
x (
33
100
x ) +
33
1000
(
9
4
x )(1 x ) +
21
250
÷ (
21
100
x ) =
9
4
(
33
100
x )
9
4
x (
33
100
x )1 x (1 x )(
33
100
x )
    Remove a bracket on the right of the equation::
     
207
400
×
33
100
207
400
x
12
25
x (
33
100
x ) +
33
1000
(
9
4
x )(1 x ) +
21
250
÷ (
21
100
x ) =
9
4
×
33
100
9
4
x
9
4
x (
33
100
x )1 x (1 x )(
33
100
x )
    The equation is reduced to :
     
6831
40000
207
400
x
12
25
x (
33
100
x ) +
33
1000
(
9
4
x )(1 x ) +
21
250
÷ (
21
100
x ) × (
9
4
x ) =
297
400
9
4
x
9
4
x (
33
100
x )1 x (1 x )(
33
100
x )
     Multiply both sides of the equation by:(
21
100
x )
     
6831
40000
(
21
100
x )
207
400
x (
21
100
x )
12
25
x (
33
100
x )(
21
100
x ) +
33
1000
(
9
4
x )(1 x ) =
297
400
(
21
100
x )
9
4
x (
21
100
x )
9
4
x (
33
100
x )(
21
100
x )1 x (1 x )
    Remove a bracket on the left of the equation:
     
6831
40000
×
21
100
6831
40000
x
207
400
x (
21
100
x )
12
25
x (
33
100
x )(
21
100
x ) +
33
1000
=
297
400
(
21
100
x )
9
4
x (
21
100
x )
9
4
x (
33
100
x )(
21
100
x )1 x (1 x )
    Remove a bracket on the right of the equation::
     
6831
40000
×
21
100
6831
40000
x
207
400
x (
21
100
x )
12
25
x (
33
100
x )(
21
100
x ) +
33
1000
=
297
400
×
21
100
297
400
x
9
4
x (
21
100
x )
9
4
x (
33
100
x )(
21
100
x )1
    The equation is reduced to :
     
143451
4000000
6831
40000
x
207
400
x (
21
100
x )
12
25
x (
33
100
x )(
21
100
x ) +
33
1000
(
9
4
x ) =
6237
40000
297
400
x
9
4
x (
21
100
x )
9
4
x (
33
100
x )(
21
100
x )1 x
    Remove a bracket on the left of the equation:
     
143451
4000000
6831
40000
x
207
400
x ×
21
100
+
207
400
x x
12
25
x (
33
100
x ) =
6237
40000
297
400
x
9
4
x (
21
100
x )
9
4
x (
33
100
x )(
21
100
x )1 x
    Remove a bracket on the right of the equation::
     
143451
4000000
6831
40000
x
207
400
x ×
21
100
+
207
400
x x
12
25
x (
33
100
x ) =
6237
40000
297
400
x
9
4
x ×
21
100
+
9
4
x x
9
4
x (
33
100
x )
    The equation is reduced to :
     
143451
4000000
6831
40000
x
4347
40000
x +
207
400
x x
12
25
x (
33
100
x )(
21
100
x ) =
6237
40000
297
400
x
189
400
x +
9
4
x x
9
4
x (
33
100
x )(
21
100
x )
    The equation is reduced to :
     
143451
4000000
5589
20000
x +
207
400
x x
12
25
x (
33
100
x )(
21
100
x ) +
33
1000
(
9
4
x ) =
6237
40000
243
200
x +
9
4
x x
9
4
x (
33
100
x )(
21
100
x )1 x

    The solution of the equation:
        x1≈0.076702 , keep 6 decimal places
        x2≈0.963143 , keep 6 decimal places
        x3≈1.844133 , keep 6 decimal places
    
    There are 3 solution(s).


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