Mathematics
         
语言:中文    Language:English
On line solution of multivariate equations:
    First set the elements of the equation (i.e. the number of unknowns), then click the "Next" button to enter the coefficients of each element of the equation set, and click the "Next" button to obtain the solution of the equation set.
    Note that the coefficients of each element of the equation system can only be numbers, not algebraic expressions (including mathematical functions).
    Current location:Equations > Multivariate equations > Answer
detailed information:
The input equation set is:
 256x + 39y = 
83079
100
    (1)
 220x + 35y = 765    (2)
Question solving process:

Multiply both sides of equation (1) by 55
Divide the two sides of equation (1) by 64, the equation can be obtained:
         220x + 
2145
64
y = 
913869
1280
    (3)
, then subtract both sides of equation (3) from both sides of equation (2), the equations are reduced to:
 256x + 39y = 
83079
100
    (1)
 
95
64
y = 
65331
1280
    (2)

Multiply both sides of equation (2) by 2496
Divide both sides of equation (2) by 95, get the equation:
         39y = 
2547909
1900
    (4)
, then subtract both sides of equation (4) from both sides of equation (1), get the equation:
 256x = 
242352
475
    (1)
 
95
64
y = 
65331
1280
    (2)

The coefficient of the unknown number is reduced to 1, and the equations are reduced to:
 x = 
15147
7600
    (1)
 y = 
65331
1900
    (2)


Therefore, the solution of the equation set is:
x = 
15147
7600
y = 
65331
1900


Convert the solution of the equation set to decimals:
x = -1.993026
y = 34.384737

解方程组的详细方法请参阅:《多元一次方程组的解法》







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