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8x=75+3x
We move all terms to the left:
8x-(75+3x)=0
We add all the numbers together, and all the variables
8x-(3x+75)=0
We get rid of parentheses
8x-3x-75=0
We add all the numbers together, and all the variables
5x-75=0
We move all terms containing x to the left, all other terms to the right
5x=75
x=75/5
x=15
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