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-3.3+5x=7.2
We move all terms to the left:
-3.3+5x-(7.2)=0
We add all the numbers together, and all the variables
5x-10.5=0
We move all terms containing x to the left, all other terms to the right
5x=10.5
x=10.5/5
x=2+0.5/5
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