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8x+7=57.4
We move all terms to the left:
8x+7-(57.4)=0
We add all the numbers together, and all the variables
8x-50.4=0
We move all terms containing x to the left, all other terms to the right
8x=50.4
x=50.4/8
x=6+1/3.3333333333333
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