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30\left(\frac{1}{5}-1\right)=\left(v-15\right)\left(1\times 5-1\right)
Variable v cannot be equal to 15 since division by zero is not defined. Multiply both sides of the equation by 30\left(v-15\right), the least common multiple of v-15,30.
30\left(-\frac{4}{5}\right)=\left(v-15\right)\left(1\times 5-1\right)
Subtract 1 from \frac{1}{5} to get -\frac{4}{5}.
-24=\left(v-15\right)\left(1\times 5-1\right)
Multiply 30 and -\frac{4}{5} to get -24.
-24=\left(v-15\right)\left(5-1\right)
Multiply 1 and 5 to get 5.
-24=\left(v-15\right)\times 4
Subtract 1 from 5 to get 4.
-24=4v-60
Use the distributive property to multiply v-15 by 4.
4v-60=-24
Swap sides so that all variable terms are on the left hand side.
4v=-24+60
Add 60 to both sides.
4v=36
Add -24 and 60 to get 36.
v=\frac{36}{4}
Divide both sides by 4.
v=9
Divide 36 by 4 to get 9.