detailed information: The input equation set is: Question solving process:
Divide the two sides of equation (1) by 6, the equation can be obtained: , then add the two sides of equation (4) to both sides of equation (2), the equations are reduced to:
Divide the two sides of equation (1) by 2, the equation can be obtained: , then subtract both sides of equation (5) from both sides of equation (3), the equations are reduced to:
Multiply both sides of equation (2) by 21 Divide the two sides of equation (2) by 5, the equation can be obtained: , then subtract both sides of equation (6) from both sides of equation (3), the equations are reduced to:
Multiply both sides of equation (2) by 12 Divide both sides of equation (2) by 5, get the equation:, then subtract both sides of equation (7) from 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:
Where: z are arbitrary constants. 解方程组的详细方法请参阅:《多元一次方程组的解法》 |