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5(x+3y)-8(2x-y)=-32
4x-2y+3x+9y=42
5x+15y-16x+8y=-32
7x+7y=42 |:7
-11x+23y=-32
x+y=6
-11x+23y=-32
x=6-y
-11(6-y)+23y=-32
x=6-y
-66+11y+23y=-32
x=6-y
34y=-32+66
x=6-y
34y=34 |:34
x=6-y
y=1
x=5