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8x+7=6x+40
We move all terms to the left:
8x+7-(6x+40)=0
We get rid of parentheses
8x-6x-40+7=0
We add all the numbers together, and all the variables
2x-33=0
We move all terms containing x to the left, all other terms to the right
2x=33
x=33/2
x=16+1/2
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