21-4v=-5(6v-3)

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Solution for 21-4v=-5(6v-3) equation:


Simplifying
21 + -4v = -5(6v + -3)

Reorder the terms:
21 + -4v = -5(-3 + 6v)
21 + -4v = (-3 * -5 + 6v * -5)
21 + -4v = (15 + -30v)

Solving
21 + -4v = 15 + -30v

Solving for variable 'v'.

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

Add '30v' to each side of the equation.
21 + -4v + 30v = 15 + -30v + 30v

Combine like terms: -4v + 30v = 26v
21 + 26v = 15 + -30v + 30v

Combine like terms: -30v + 30v = 0
21 + 26v = 15 + 0
21 + 26v = 15

Add '-21' to each side of the equation.
21 + -21 + 26v = 15 + -21

Combine like terms: 21 + -21 = 0
0 + 26v = 15 + -21
26v = 15 + -21

Combine like terms: 15 + -21 = -6
26v = -6

Divide each side by '26'.
v = -0.2307692308

Simplifying
v = -0.2307692308

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