15=3(2u-9)

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Solution for 15=3(2u-9) equation:


Simplifying
15 = 3(2u + -9)

Reorder the terms:
15 = 3(-9 + 2u)
15 = (-9 * 3 + 2u * 3)
15 = (-27 + 6u)

Solving
15 = -27 + 6u

Solving for variable 'u'.

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

Add '-6u' to each side of the equation.
15 + -6u = -27 + 6u + -6u

Combine like terms: 6u + -6u = 0
15 + -6u = -27 + 0
15 + -6u = -27

Add '-15' to each side of the equation.
15 + -15 + -6u = -27 + -15

Combine like terms: 15 + -15 = 0
0 + -6u = -27 + -15
-6u = -27 + -15

Combine like terms: -27 + -15 = -42
-6u = -42

Divide each side by '-6'.
u = 7

Simplifying
u = 7

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