Solve : 3 ( x - 1 ) - 4 ( 2x - 5 ) = 7x - 9
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3(x-1)-4(2x-5)=7x-9
3×x-3×1-4×2x+4×5=7x-9
3x-3-8x+20=7x-9
3x-8x-7x=3-9
-12x=-6
-12/6=x
-2=0
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