9u-2-7=20

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Solution for 9u-2-7=20 equation:


Simplifying
9u + -2 + -7 = 20

Reorder the terms:
-2 + -7 + 9u = 20

Combine like terms: -2 + -7 = -9
-9 + 9u = 20

Solving
-9 + 9u = 20

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 + 9u = 20 + 9

Combine like terms: -9 + 9 = 0
0 + 9u = 20 + 9
9u = 20 + 9

Combine like terms: 20 + 9 = 29
9u = 29

Divide each side by '9'.
u = 3.222222222

Simplifying
u = 3.222222222

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