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(5x-2x)-30=70
We move all terms to the left:
(5x-2x)-30-(70)=0
We add all the numbers together, and all the variables
(+3x)-30-70=0
We add all the numbers together, and all the variables
(+3x)-100=0
We get rid of parentheses
3x-100=0
We move all terms containing x to the left, all other terms to the right
3x=100
x=100/3
x=33+1/3
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