Question

5x + 2y = – 10
3х + бу = 66
Solve rack system of equations by multiplication and addition

Answer 1

Answer: x=-8, y=15
Solving process: -3(5x+2y=-10)
-15x-6y=30
3x+6y=66 <—add them
-12x=96
x=-8
3(-8)+6y=66
-24+6y=66
6y=90
y=15