3(5x-1)-4(x-2)=120-12x
15x-3-4x+8=120-12x
11x+5=120-12x
11x+12=120-5
23x=115
x=5
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3(5x-1)-4(x-2)=120-12x
15x-3-4x+8=120-12x
11x+5=120-12x
11x+12=120-5
23x=115
x=5