4u-9=71

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Solution for 4u-9=71 equation: 


Simplifying
4u + -9 = 71

Reorder the terms:
-9 + 4u = 71

Solving
-9 + 4u = 71

Solving for variable 'u'.

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

Add '9' to each side of the equation.
-9 + 9 + 4u = 71 + 9

Combine like terms: -9 + 9 = 0
0 + 4u = 71 + 9
4u = 71 + 9

Combine like terms: 71 + 9 = 80
4u = 80

Divide each side by '4'.
u = 20

Simplifying
u = 20

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