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\frac{9\left(v-6\right)}{7v\left(v-6\right)}+\frac{9\times 7v}{7v\left(v-6\right)}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 7v and v-6 is 7v\left(v-6\right). Multiply \frac{9}{7v} times \frac{v-6}{v-6}. Multiply \frac{9}{v-6} times \frac{7v}{7v}.
\frac{9\left(v-6\right)+9\times 7v}{7v\left(v-6\right)}
Since \frac{9\left(v-6\right)}{7v\left(v-6\right)} and \frac{9\times 7v}{7v\left(v-6\right)} have the same denominator, add them by adding their numerators.
\frac{9v-54+63v}{7v\left(v-6\right)}
Do the multiplications in 9\left(v-6\right)+9\times 7v.
\frac{72v-54}{7v\left(v-6\right)}
Combine like terms in 9v-54+63v.
\frac{72v-54}{7v^{2}-42v}
Expand 7v\left(v-6\right).