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4x-3y=-18
2x+2y=5
2x=5-2y
x=5/2-y->4x-3y=-18
4(5/2-y)-3y=-18
20/2-4y-3y=-18
10-7y=-18
-7y=-18-10
-7y=-28
7y=28
y=4->2x+2y=5
2x+2(4)=5
2x+8=5
2x=5-8
2x=-3
x=-3/2