7u-7v+21=

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Solution for 7u-7v+21= equation:


Simplifying
7u + -7v + 21 = 0

Reorder the terms:
21 + 7u + -7v = 0

Solving
21 + 7u + -7v = 0

Solving for variable 'u'.

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

Add '-21' to each side of the equation.
21 + 7u + -21 + -7v = 0 + -21

Reorder the terms:
21 + -21 + 7u + -7v = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 7u + -7v = 0 + -21
7u + -7v = 0 + -21

Combine like terms: 0 + -21 = -21
7u + -7v = -21

Add '7v' to each side of the equation.
7u + -7v + 7v = -21 + 7v

Combine like terms: -7v + 7v = 0
7u + 0 = -21 + 7v
7u = -21 + 7v

Divide each side by '7'.
u = -3 + v

Simplifying
u = -3 + v

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