13-9u=-7-11u-8

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Solution for 13-9u=-7-11u-8 equation:


Simplifying
13 + -9u = -7 + -11u + -8

Reorder the terms:
13 + -9u = -7 + -8 + -11u

Combine like terms: -7 + -8 = -15
13 + -9u = -15 + -11u

Solving
13 + -9u = -15 + -11u

Solving for variable 'u'.

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

Add '11u' to each side of the equation.
13 + -9u + 11u = -15 + -11u + 11u

Combine like terms: -9u + 11u = 2u
13 + 2u = -15 + -11u + 11u

Combine like terms: -11u + 11u = 0
13 + 2u = -15 + 0
13 + 2u = -15

Add '-13' to each side of the equation.
13 + -13 + 2u = -15 + -13

Combine like terms: 13 + -13 = 0
0 + 2u = -15 + -13
2u = -15 + -13

Combine like terms: -15 + -13 = -28
2u = -28

Divide each side by '2'.
u = -14

Simplifying
u = -14

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