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9.4x+7=82.2
We move all terms to the left:
9.4x+7-(82.2)=0
We add all the numbers together, and all the variables
9.4x-75.2=0
We move all terms containing x to the left, all other terms to the right
9.4x=75.2
x=75.2/9.4
x=8
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