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8x-40-2x=45-2x
We move all terms to the left:
8x-40-2x-(45-2x)=0
We add all the numbers together, and all the variables
8x-2x-(-2x+45)-40=0
We add all the numbers together, and all the variables
6x-(-2x+45)-40=0
We get rid of parentheses
6x+2x-45-40=0
We add all the numbers together, and all the variables
8x-85=0
We move all terms containing x to the left, all other terms to the right
8x=85
x=85/8
x=10+5/8
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