4+5v=21

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Solution for 4+5v=21 equation: 



4+5v=21

We move all terms to the left:

4+5v-(21)=0

We add all the numbers together, and all the variables

5v-17=0

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

5v=17

v=17/5

v=3+2/5

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