-2(v+5)-(-1+v)=21

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Solution for -2(v+5)-(-1+v)=21 equation:


Simplifying
-2(v + 5) + -1(-1 + v) = 21

Reorder the terms:
-2(5 + v) + -1(-1 + v) = 21
(5 * -2 + v * -2) + -1(-1 + v) = 21
(-10 + -2v) + -1(-1 + v) = 21
-10 + -2v + (-1 * -1 + v * -1) = 21
-10 + -2v + (1 + -1v) = 21

Reorder the terms:
-10 + 1 + -2v + -1v = 21

Combine like terms: -10 + 1 = -9
-9 + -2v + -1v = 21

Combine like terms: -2v + -1v = -3v
-9 + -3v = 21

Solving
-9 + -3v = 21

Solving for variable 'v'.

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

Add '9' to each side of the equation.
-9 + 9 + -3v = 21 + 9

Combine like terms: -9 + 9 = 0
0 + -3v = 21 + 9
-3v = 21 + 9

Combine like terms: 21 + 9 = 30
-3v = 30

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

Simplifying
v = -10

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