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4x+89.65=628.35
We move all terms to the left:
4x+89.65-(628.35)=0
We add all the numbers together, and all the variables
4x-538.7=0
We move all terms containing x to the left, all other terms to the right
4x=538.7
x=538.7/4
x=134+1/1.4814814814815
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