15-3u=2u

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Solution for 15-3u=2u equation:


Simplifying
15 + -3u = 2u

Solving
15 + -3u = 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 + -3u + -2u = 2u + -2u

Combine like terms: -3u + -2u = -5u
15 + -5u = 2u + -2u

Combine like terms: 2u + -2u = 0
15 + -5u = 0

Add '-15' to each side of the equation.
15 + -15 + -5u = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -5u = 0 + -15
-5u = 0 + -15

Combine like terms: 0 + -15 = -15
-5u = -15

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

Simplifying
u = 3

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