Current location - Training Enrollment Network - Mathematics courses - The seventh grade, the second volume of mathematics, knows the answer website of the world; Solve the equation; 2x-3y = 8； 7x-5y=-5
The seventh grade, the second volume of mathematics, knows the answer website of the world; Solve the equation; 2x-3y = 8； 7x-5y=-5
2x-3y=8
Multiply by 5 to get 10x- 15y=40.
7x-5y=-5
Multiply by 3 to get 21x-15y =-15.
Then subtract two formulas from the first formula; - 1 1x=55