9=4u+5u

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Solution for 9=4u+5u equation:


Simplifying
9 = 4u + 5u

Combine like terms: 4u + 5u = 9u
9 = 9u

Solving
9 = 9u

Solving for variable 'u'.

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

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

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

Add '-9' to each side of the equation.
9 + -9 + -9u = 0 + -9

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

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

Divide each side by '-9'.
u = 1

Simplifying
u = 1

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