51=3u-9

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Solution for 51=3u-9 equation:


Simplifying
51 = 3u + -9

Reorder the terms:
51 = -9 + 3u

Solving
51 = -9 + 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.
51 + -3u = -9 + 3u + -3u

Combine like terms: 3u + -3u = 0
51 + -3u = -9 + 0
51 + -3u = -9

Add '-51' to each side of the equation.
51 + -51 + -3u = -9 + -51

Combine like terms: 51 + -51 = 0
0 + -3u = -9 + -51
-3u = -9 + -51

Combine like terms: -9 + -51 = -60
-3u = -60

Divide each side by '-3'.
u = 20

Simplifying
u = 20

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