-3v-4v=-21

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Solution for -3v-4v=-21 equation: 


Simplifying
-3v + -4v = -21

Combine like terms: -3v + -4v = -7v
-7v = -21

Solving
-7v = -21

Solving for variable 'v'.

Move all terms containing v to the left, all other terms to the right.

Divide each side by '-7'.
v = 3

Simplifying
v = 3

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