3(u+7v)=

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Solution for 3(u+7v)= equation: 


Simplifying
3(u + 7v) = 0
(u * 3 + 7v * 3) = 0
(3u + 21v) = 0

Solving
3u + 21v = 0

Solving for variable 'u'.

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

Add '-21v' to each side of the equation.
3u + 21v + -21v = 0 + -21v

Combine like terms: 21v + -21v = 0
3u + 0 = 0 + -21v
3u = 0 + -21v
Remove the zero:
3u = -21v

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

Simplifying
u = -7v

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