-79=-13+-3u

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Solution for -79=-13+-3u equation:


Simplifying
-79 = -13 + -3u

Solving
-79 = -13 + -3u

Solving for variable 'u'.

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

Add '3u' to each side of the equation.
-79 + 3u = -13 + -3u + 3u

Combine like terms: -3u + 3u = 0
-79 + 3u = -13 + 0
-79 + 3u = -13

Add '79' to each side of the equation.
-79 + 79 + 3u = -13 + 79

Combine like terms: -79 + 79 = 0
0 + 3u = -13 + 79
3u = -13 + 79

Combine like terms: -13 + 79 = 66
3u = 66

Divide each side by '3'.
u = 22

Simplifying
u = 22

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