7(u+-3)=0

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Solution for 7(u+-3)=0 equation: 


Simplifying
7(u + -3) = 0

Reorder the terms:
7(-3 + u) = 0
(-3 * 7 + u * 7) = 0
(-21 + 7u) = 0

Solving
-21 + 7u = 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 + 7u = 0 + 21

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

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

Divide each side by '7'.
u = 3

Simplifying
u = 3

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