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0.4v-6.69=2.8v+6.75
We move all terms to the left:
0.4v-6.69-(2.8v+6.75)=0
We get rid of parentheses
0.4v-2.8v-6.75-6.69=0
We add all the numbers together, and all the variables
-2.4v-13.44=0
We move all terms containing v to the left, all other terms to the right
-2.4v=13.44
v=13.44/-2.4
v=-5+1/1.6666666666667
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