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:
 93x + 69y = 46000    (1)
 75x + 310y = 
352577
5
    (2)
Question solving process:

Multiply both sides of equation (1) by 25
Divide the two sides of equation (1) by 31, the equation can be obtained:
         75x + 
1725
31
y = 
1150000
31
    (3)
, then subtract both sides of equation (3) from both sides of equation (2), the equations are reduced to:
 93x + 69y = 46000    (1)
 
7885
31
y = 
5179887
155
    (2)

Multiply both sides of equation (2) by 2139
Divide both sides of equation (2) by 7885, get the equation:
         69y = 
19001301
12865
    (4)
, then subtract both sides of equation (4) from both sides of equation (1), get the equation:
 93x = 
572788699
12865
    (1)
 
7885
31
y = 
5179887
155
    (2)

The coefficient of the unknown number is reduced to 1, and the equations are reduced to:
 x = 
572788699
1196445
    (1)
 y = 
5179887
39425
    (2)


Therefore, the solution of the equation set is:
x = 
572788699
1196445
y = 
5179887
39425


Convert the solution of the equation set to decimals:
x = 478.742190
y = 131.385847

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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