detailed information: The input equation set is: Question solving process:
Multiply both sides of equation (1) by 2 Divide the two sides of equation (1) by 5, the equation can be obtained: , then subtract both sides of equation (7) from both sides of equation (2), the equations are reduced to:
Divide the two sides of equation (1) by 5, the equation can be obtained: , then subtract both sides of equation (8) from both sides of equation (4), the equations are reduced to:
| | | | | | - | 4 5 | C | + | | 3 | D | | -1 | F | = | | - | 31 5 | | (4) |
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Add both sides of equation (2) to both sides of equation (3) ,the equations are reduced to:
| | | | | | - | 4 5 | C | + | | 3 | D | | -1 | F | = | | - | 31 5 | | (4) |
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Multiply both sides of equation (2) by 2, the equation can be obtained: , then add the two sides of equation (9) to both sides of equation (5), the equations are reduced to:
| | | | | | - | 4 5 | C | + | | 3 | D | | -1 | F | = | | - | 31 5 | | (4) |
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Multiply both sides of equation (3) by 4 Divide the two sides of equation (3) by 23, the equation can be obtained: , then subtract both sides of equation (10) from both sides of equation (4), the equations are reduced to:
Multiply both sides of equation (3) by 11 Divide the two sides of equation (3) by 23, the equation can be obtained: , then subtract both sides of equation (11) from both sides of equation (5), the equations are reduced to:
Subtract both sides of equation (4) from both sides of equation (6) ,the equations are reduced to:
Subtract both sides of equation (5) from both sides of equation (6) ,the equations are reduced to:
Add both sides of equation (6) to both sides of equation (5), get the equation:
Subtract both sides of equation (6) from both sides of equation (4), get the equation:
Multiply both sides of equation (3) by 8 Divide both sides of equation (3) by 23, get the equation:, then subtract both sides of equation (12) from both sides of equation (2), get the equation:
Multiply both sides of equation (3) by 20 Divide both sides of equation (3) by 23, get the equation:, then add the two sides of equation (13) to both sides of equation (1), get the equation:
The coefficient of the unknown number is reduced to 1, and the equations are reduced to:
Therefore, the solution of the equation set is:
解方程组的详细方法请参阅:《多元一次方程组的解法》 |