7u-9=3u+5

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Solution for 7u-9=3u+5 equation:


Simplifying
7u + -9 = 3u + 5

Reorder the terms:
-9 + 7u = 3u + 5

Reorder the terms:
-9 + 7u = 5 + 3u

Solving
-9 + 7u = 5 + 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 + 7u + -3u = 5 + 3u + -3u

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

Combine like terms: 3u + -3u = 0
-9 + 4u = 5 + 0
-9 + 4u = 5

Add '9' to each side of the equation.
-9 + 9 + 4u = 5 + 9

Combine like terms: -9 + 9 = 0
0 + 4u = 5 + 9
4u = 5 + 9

Combine like terms: 5 + 9 = 14
4u = 14

Divide each side by '4'.
u = 3.5

Simplifying
u = 3.5

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