Question

1- x - 4y=32
x - 3y= -17

2- 3x +4y=18
5x - y =7

3- x + y = 2
x + y = 8

Answer 1

1.

X=32+4y

32+4y-3y=-17

32+y=-17

Y=17-32

Y=-15

X-4y=32

X-4(-15)=32

X+60=32

60-32=x

28=x