5u-9=9+7u-4u

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Solution for 5u-9=9+7u-4u equation:


Simplifying
5u + -9 = 9 + 7u + -4u

Reorder the terms:
-9 + 5u = 9 + 7u + -4u

Combine like terms: 7u + -4u = 3u
-9 + 5u = 9 + 3u

Solving
-9 + 5u = 9 + 3u

Solving for variable 'u'.

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

Add '-3u' to each side of the equation.
-9 + 5u + -3u = 9 + 3u + -3u

Combine like terms: 5u + -3u = 2u
-9 + 2u = 9 + 3u + -3u

Combine like terms: 3u + -3u = 0
-9 + 2u = 9 + 0
-9 + 2u = 9

Add '9' to each side of the equation.
-9 + 9 + 2u = 9 + 9

Combine like terms: -9 + 9 = 0
0 + 2u = 9 + 9
2u = 9 + 9

Combine like terms: 9 + 9 = 18
2u = 18

Divide each side by '2'.
u = 9

Simplifying
u = 9

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