45=4u+9

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Solution for 45=4u+9 equation:


Simplifying
45 = 4u + 9

Reorder the terms:
45 = 9 + 4u

Solving
45 = 9 + 4u

Solving for variable 'u'.

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

Add '-4u' to each side of the equation.
45 + -4u = 9 + 4u + -4u

Combine like terms: 4u + -4u = 0
45 + -4u = 9 + 0
45 + -4u = 9

Add '-45' to each side of the equation.
45 + -45 + -4u = 9 + -45

Combine like terms: 45 + -45 = 0
0 + -4u = 9 + -45
-4u = 9 + -45

Combine like terms: 9 + -45 = -36
-4u = -36

Divide each side by '-4'.
u = 9

Simplifying
u = 9

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