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(3x-3)-7x=50
We move all terms to the left:
(3x-3)-7x-(50)=0
We add all the numbers together, and all the variables
-7x+(3x-3)-50=0
We get rid of parentheses
-7x+3x-3-50=0
We add all the numbers together, and all the variables
-4x-53=0
We move all terms containing x to the left, all other terms to the right
-4x=53
x=53/-4
x=-13+1/4
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