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-51=2x+6x+5
We move all terms to the left:
-51-(2x+6x+5)=0
We add all the numbers together, and all the variables
-(8x+5)-51=0
We get rid of parentheses
-8x-5-51=0
We add all the numbers together, and all the variables
-8x-56=0
We move all terms containing x to the left, all other terms to the right
-8x=56
x=56/-8
x=-7
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