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3x+7.2=86.3
We move all terms to the left:
3x+7.2-(86.3)=0
We add all the numbers together, and all the variables
3x-79.1=0
We move all terms containing x to the left, all other terms to the right
3x=79.1
x=79.1/3
x=26+1/2.7272727272727
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