105=5u+15

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Solution for 105=5u+15 equation:


Simplifying
105 = 5u + 15

Reorder the terms:
105 = 15 + 5u

Solving
105 = 15 + 5u

Solving for variable 'u'.

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

Add '-5u' to each side of the equation.
105 + -5u = 15 + 5u + -5u

Combine like terms: 5u + -5u = 0
105 + -5u = 15 + 0
105 + -5u = 15

Add '-105' to each side of the equation.
105 + -105 + -5u = 15 + -105

Combine like terms: 105 + -105 = 0
0 + -5u = 15 + -105
-5u = 15 + -105

Combine like terms: 15 + -105 = -90
-5u = -90

Divide each side by '-5'.
u = 18

Simplifying
u = 18

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