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42=-7/9v
We move all terms to the left:
42-(-7/9v)=0
Domain of the equation: 9v)!=0We get rid of parentheses
v!=0/1
v!=0
v∈R
7/9v+42=0
We multiply all the terms by the denominator
42*9v+7=0
Wy multiply elements
378v+7=0
We move all terms containing v to the left, all other terms to the right
378v=-7
v=-7/378
v=-1/54
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