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2x-30+3(2x-30)-54+4(3(2x-30)-54)-72=48
We move all terms to the left:
2x-30+3(2x-30)-54+4(3(2x-30)-54)-72-(48)=0
We add all the numbers together, and all the variables
2x+3(2x-30)+4(3(2x-30)-54)-204=0
We multiply parentheses
2x+6x+4(3(2x-30)-54)-90-204=0
We add all the numbers together, and all the variables
8x+4(3(2x-30)-54)-294=0
We move all terms containing x to the left, all other terms to the right
8x+4(3(2x-30)-54)=294
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