Question

Resolva os sistemas. {5x - y = 1 / 2x - 3y = -10

Answer 1

5x-y=1 (-2)
2x-3y=-10(5)

-10x+2y=-2
10x-15y=-50
__________
-13y=-52
-y=-52/13
-y=-4(-1)
y=4

5x-y=1
5x-4=1
5x=1+4
5x=5
x=5/5
x=1