5(3x - 2)+2=-2(4y+1),
3(y-x)+ 8 = 3x -(5x - y)
15x-10+2=-8y-2
3y-3x+8=3x-5x+y
15x+8y=-2+10-2
3y-3x-3x+5x-y=-8
15x+8y=6
2y-x=-8
15x+8y=6
-x=-8-2y
-15x-8y=-6
x=8+2y
-15(8+2y)-8y=-6
-120-30y-8y=-6
-30y-8y=-6+120
-38y=114
y=114÷-38
y=-3
x=8+2×-3
x=2
(x;y)=(2;-3)
