89=8u+17

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Solution for 89=8u+17 equation:


Simplifying
89 = 8u + 17

Reorder the terms:
89 = 17 + 8u

Solving
89 = 17 + 8u

Solving for variable 'u'.

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

Add '-8u' to each side of the equation.
89 + -8u = 17 + 8u + -8u

Combine like terms: 8u + -8u = 0
89 + -8u = 17 + 0
89 + -8u = 17

Add '-89' to each side of the equation.
89 + -89 + -8u = 17 + -89

Combine like terms: 89 + -89 = 0
0 + -8u = 17 + -89
-8u = 17 + -89

Combine like terms: 17 + -89 = -72
-8u = -72

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

Simplifying
u = 9

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