15=2u+9

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Solution for 15=2u+9 equation:


Simplifying
15 = 2u + 9

Reorder the terms:
15 = 9 + 2u

Solving
15 = 9 + 2u

Solving for variable 'u'.

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

Add '-2u' to each side of the equation.
15 + -2u = 9 + 2u + -2u

Combine like terms: 2u + -2u = 0
15 + -2u = 9 + 0
15 + -2u = 9

Add '-15' to each side of the equation.
15 + -15 + -2u = 9 + -15

Combine like terms: 15 + -15 = 0
0 + -2u = 9 + -15
-2u = 9 + -15

Combine like terms: 9 + -15 = -6
-2u = -6

Divide each side by '-2'.
u = 3

Simplifying
u = 3

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