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-4+7x=-7x+150
We move all terms to the left:
-4+7x-(-7x+150)=0
We get rid of parentheses
7x+7x-150-4=0
We add all the numbers together, and all the variables
14x-154=0
We move all terms containing x to the left, all other terms to the right
14x=154
x=154/14
x=11
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