4v+21=9(v+4)

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Solution for 4v+21=9(v+4) equation:


Simplifying
4v + 21 = 9(v + 4)

Reorder the terms:
21 + 4v = 9(v + 4)

Reorder the terms:
21 + 4v = 9(4 + v)
21 + 4v = (4 * 9 + v * 9)
21 + 4v = (36 + 9v)

Solving
21 + 4v = 36 + 9v

Solving for variable 'v'.

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

Add '-9v' to each side of the equation.
21 + 4v + -9v = 36 + 9v + -9v

Combine like terms: 4v + -9v = -5v
21 + -5v = 36 + 9v + -9v

Combine like terms: 9v + -9v = 0
21 + -5v = 36 + 0
21 + -5v = 36

Add '-21' to each side of the equation.
21 + -21 + -5v = 36 + -21

Combine like terms: 21 + -21 = 0
0 + -5v = 36 + -21
-5v = 36 + -21

Combine like terms: 36 + -21 = 15
-5v = 15

Divide each side by '-5'.
v = -3

Simplifying
v = -3

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