4u+13=81

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Solution for 4u+13=81 equation: 


Simplifying
4u + 13 = 81

Reorder the terms:
13 + 4u = 81

Solving
13 + 4u = 81

Solving for variable 'u'.

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

Add '-13' to each side of the equation.
13 + -13 + 4u = 81 + -13

Combine like terms: 13 + -13 = 0
0 + 4u = 81 + -13
4u = 81 + -13

Combine like terms: 81 + -13 = 68
4u = 68

Divide each side by '4'.
u = 17

Simplifying
u = 17

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