40=23-7v

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Solution for 40=23-7v equation: 



40=23-7v

We move all terms to the left:

40-(23-7v)=0

We add all the numbers together, and all the variables

-(-7v+23)+40=0

We get rid of parentheses

7v-23+40=0

We add all the numbers together, and all the variables

7v+17=0

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

7v=-17

v=-17/7

v=-2+3/7

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