x= -17-y/5 5(7-5y) + 2y = -34 35-25y+2y=-34 -23y =-69 y=-69/-23 =3
2x +5(3)=7 x=7-15/2 = -4
x=49+y/8 3(49+y/8) + 2y =-3 147+3y+16y= -24 19y=-171 y=-171/19=-9
3x + 2(-9) =-3 3x-18 = -3 3x=18-3 x= 15/3 = 5
x= -20+12y 3(-20+12y)-4y=20 -60+12y-4y=20 8y=80 y=80/8 =10
x= -20 + 12y x=-20 + 12(10) x=-20 + 120=100
