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:
 98x + 44y = 71    (1)
 94x + 89y = 61    (2)
Question solving process:

Multiply both sides of equation (1) by 47
Divide the two sides of equation (1) by 49, the equation can be obtained:
         94x + 
2068
49
y = 
3337
49
    (3)
, then subtract both sides of equation (3) from both sides of equation (2), the equations are reduced to:
 98x + 44y = 71    (1)
 
2293
49
y = 
348
49
    (2)

Multiply both sides of equation (2) by 2156
Divide both sides of equation (2) by 2293, get the equation:
         
100892
2293
y = 
15312
2293
    (4)
, then subtract both sides of equation (4) from both sides of equation (1), get the equation:
 98x = 
178115
2293
    (1)
 
2293
49
y = 
348
49
    (2)

The coefficient of the unknown number is reduced to 1, and the equations are reduced to:
 x = 
3635
4586
    (1)
 y = 
348
2293
    (2)


Therefore, the solution of the equation set is:
x = 
3635
4586
y = 
348
2293


Convert the solution of the equation set to decimals:
x = 0.792630
y = -0.151766

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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