(u-5)*7=21

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Solution for (u-5)*7=21 equation:


Simplifying
(u + -5) * 7 = 21

Reorder the terms:
(-5 + u) * 7 = 21

Reorder the terms for easier multiplication:
7(-5 + u) = 21
(-5 * 7 + u * 7) = 21
(-35 + 7u) = 21

Solving
-35 + 7u = 21

Solving for variable 'u'.

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

Add '35' to each side of the equation.
-35 + 35 + 7u = 21 + 35

Combine like terms: -35 + 35 = 0
0 + 7u = 21 + 35
7u = 21 + 35

Combine like terms: 21 + 35 = 56
7u = 56

Divide each side by '7'.
u = 8

Simplifying
u = 8

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