4u-9=-5u

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Solution for 4u-9=-5u equation:


Simplifying
4u + -9 = -5u

Reorder the terms:
-9 + 4u = -5u

Solving
-9 + 4u = -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.
-9 + 4u + 5u = -5u + 5u

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

Combine like terms: -5u + 5u = 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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