45-4u=u

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Solution for 45-4u=u equation:


Simplifying
45 + -4u = u

Solving
45 + -4u = u

Solving for variable 'u'.

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

Add '-1u' to each side of the equation.
45 + -4u + -1u = u + -1u

Combine like terms: -4u + -1u = -5u
45 + -5u = u + -1u

Combine like terms: u + -1u = 0
45 + -5u = 0

Add '-45' to each side of the equation.
45 + -45 + -5u = 0 + -45

Combine like terms: 45 + -45 = 0
0 + -5u = 0 + -45
-5u = 0 + -45

Combine like terms: 0 + -45 = -45
-5u = -45

Divide each side by '-5'.
u = 9

Simplifying
u = 9

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