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4+7x=-x+30
We move all terms to the left:
4+7x-(-x+30)=0
We add all the numbers together, and all the variables
7x-(-1x+30)+4=0
We get rid of parentheses
7x+1x-30+4=0
We add all the numbers together, and all the variables
8x-26=0
We move all terms containing x to the left, all other terms to the right
8x=26
x=26/8
x=3+1/4
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