-9=3v+7(v+3)

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Solution for -9=3v+7(v+3) equation:


Simplifying
-9 = 3v + 7(v + 3)

Reorder the terms:
-9 = 3v + 7(3 + v)
-9 = 3v + (3 * 7 + v * 7)
-9 = 3v + (21 + 7v)

Reorder the terms:
-9 = 21 + 3v + 7v

Combine like terms: 3v + 7v = 10v
-9 = 21 + 10v

Solving
-9 = 21 + 10v

Solving for variable 'v'.

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

Add '-10v' to each side of the equation.
-9 + -10v = 21 + 10v + -10v

Combine like terms: 10v + -10v = 0
-9 + -10v = 21 + 0
-9 + -10v = 21

Add '9' to each side of the equation.
-9 + 9 + -10v = 21 + 9

Combine like terms: -9 + 9 = 0
0 + -10v = 21 + 9
-10v = 21 + 9

Combine like terms: 21 + 9 = 30
-10v = 30

Divide each side by '-10'.
v = -3

Simplifying
v = -3

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