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5=-4.2+v
We move all terms to the left:
5-(-4.2+v)=0
We add all the numbers together, and all the variables
-(v-4.2)+5=0
We get rid of parentheses
-v+4.2+5=0
We add all the numbers together, and all the variables
-1v+9.2=0
We move all terms containing v to the left, all other terms to the right
-v=-9.2
v=-9.2/-1
v=9+0.2/1
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