7u+13=3u+9

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Solution for 7u+13=3u+9 equation:


Simplifying
7u + 13 = 3u + 9

Reorder the terms:
13 + 7u = 3u + 9

Reorder the terms:
13 + 7u = 9 + 3u

Solving
13 + 7u = 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.
13 + 7u + -3u = 9 + 3u + -3u

Combine like terms: 7u + -3u = 4u
13 + 4u = 9 + 3u + -3u

Combine like terms: 3u + -3u = 0
13 + 4u = 9 + 0
13 + 4u = 9

Add '-13' to each side of the equation.
13 + -13 + 4u = 9 + -13

Combine like terms: 13 + -13 = 0
0 + 4u = 9 + -13
4u = 9 + -13

Combine like terms: 9 + -13 = -4
4u = -4

Divide each side by '4'.
u = -1

Simplifying
u = -1

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