5u+9=17u-4u+81

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Solution for 5u+9=17u-4u+81 equation:


Simplifying
5u + 9 = 17u + -4u + 81

Reorder the terms:
9 + 5u = 17u + -4u + 81

Reorder the terms:
9 + 5u = 81 + 17u + -4u

Combine like terms: 17u + -4u = 13u
9 + 5u = 81 + 13u

Solving
9 + 5u = 81 + 13u

Solving for variable 'u'.

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

Add '-13u' to each side of the equation.
9 + 5u + -13u = 81 + 13u + -13u

Combine like terms: 5u + -13u = -8u
9 + -8u = 81 + 13u + -13u

Combine like terms: 13u + -13u = 0
9 + -8u = 81 + 0
9 + -8u = 81

Add '-9' to each side of the equation.
9 + -9 + -8u = 81 + -9

Combine like terms: 9 + -9 = 0
0 + -8u = 81 + -9
-8u = 81 + -9

Combine like terms: 81 + -9 = 72
-8u = 72

Divide each side by '-8'.
u = -9

Simplifying
u = -9

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