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3=4.9v-9
We move all terms to the left:
3-(4.9v-9)=0
We get rid of parentheses
-4.9v+9+3=0
We add all the numbers together, and all the variables
-4.9v+12=0
We move all terms containing v to the left, all other terms to the right
-4.9v=-12
v=-12/-4.9
v=2+1/2.2272727272727
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