7=-8+3u

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Solution for 7=-8+3u equation:


Simplifying
7 = -8 + 3u

Solving
7 = -8 + 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.
7 + -3u = -8 + 3u + -3u

Combine like terms: 3u + -3u = 0
7 + -3u = -8 + 0
7 + -3u = -8

Add '-7' to each side of the equation.
7 + -7 + -3u = -8 + -7

Combine like terms: 7 + -7 = 0
0 + -3u = -8 + -7
-3u = -8 + -7

Combine like terms: -8 + -7 = -15
-3u = -15

Divide each side by '-3'.
u = 5

Simplifying
u = 5

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