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4x-8=4y
(4x-8):4=y
2x-8=y
3x-5y=-30
3x+30=5y
(3x+30):5=y
3x/5 +6=y
2x-8=3x/5+6
5.(2x-8)=5.(3x/5 +6)
10x-40=3x+30
10x-3x=30+40
7x=70
x=70:7
x=10