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-7.2+4v=5.6
We move all terms to the left:
-7.2+4v-(5.6)=0
We add all the numbers together, and all the variables
4v-12.8=0
We move all terms containing v to the left, all other terms to the right
4v=12.8
v=12.8/4
v=3+0.8/4
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