detailed information: The input equation set is: Question solving process:
Divide the two sides of equation (1) by 2, the equation can be obtained: , then subtract both sides of equation (4) from 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:
Add both sides of equation (2) to both sides of equation (3) ,the equations are reduced to:
The coefficient of the unknown number is reduced to 1, and the equations are reduced to:
Therefore, the solution of the equation set is:
Convert the solution of the equation set to decimals:
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》 |