7v-9=1+8v

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Solution for 7v-9=1+8v equation: 



7v-9=1+8v

We move all terms to the left:

7v-9-(1+8v)=0

We add all the numbers together, and all the variables

7v-(8v+1)-9=0

We get rid of parentheses

7v-8v-1-9=0

We add all the numbers together, and all the variables

-1v-10=0

We move all terms containing v to the left, all other terms to the right

-v=10

v=10/-1

v=-10

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