-3(-7+2u)=

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Solution for -3(-7+2u)= equation: 


Simplifying
-3(-7 + 2u) = 0
(-7 * -3 + 2u * -3) = 0
(21 + -6u) = 0

Solving
21 + -6u = 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 + -21 + -6u = 0 + -21

Combine like terms: 21 + -21 = 0
0 + -6u = 0 + -21
-6u = 0 + -21

Combine like terms: 0 + -21 = -21
-6u = -21

Divide each side by '-6'.
u = 3.5

Simplifying
u = 3.5

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