7+21=5v+2v

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Solution for 7+21=5v+2v equation:


Simplifying
7 + 21 = 5v + 2v

Combine like terms: 7 + 21 = 28
28 = 5v + 2v

Combine like terms: 5v + 2v = 7v
28 = 7v

Solving
28 = 7v

Solving for variable 'v'.

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

Add '-7v' to each side of the equation.
28 + -7v = 7v + -7v

Combine like terms: 7v + -7v = 0
28 + -7v = 0

Add '-28' to each side of the equation.
28 + -28 + -7v = 0 + -28

Combine like terms: 28 + -28 = 0
0 + -7v = 0 + -28
-7v = 0 + -28

Combine like terms: 0 + -28 = -28
-7v = -28

Divide each side by '-7'.
v = 4

Simplifying
v = 4

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