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7=-1+4x
We move all terms to the left:
7-(-1+4x)=0
We add all the numbers together, and all the variables
-(4x-1)+7=0
We get rid of parentheses
-4x+1+7=0
We add all the numbers together, and all the variables
-4x+8=0
We move all terms containing x to the left, all other terms to the right
-4x=-8
x=-8/-4
x=+2
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