Question

quanto e x-3y=8
2x+5y=-17

Answer 1

x-3y=8
x = 8+3y

2x+5y=-17
2(8+3y)+5y= -17
16+6y+5y=-17
+6y+5y =-17-16
11y = -33
y = -33/11
y = -3

x= 8+3y
x = 8+3.(-3)
x = 8-9
x = -1

(-1,-3)