3u-20=13

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Solution for 3u-20=13 equation: 


Simplifying
3u + -20 = 13

Reorder the terms:
-20 + 3u = 13

Solving
-20 + 3u = 13

Solving for variable 'u'.

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

Add '20' to each side of the equation.
-20 + 20 + 3u = 13 + 20

Combine like terms: -20 + 20 = 0
0 + 3u = 13 + 20
3u = 13 + 20

Combine like terms: 13 + 20 = 33
3u = 33

Divide each side by '3'.
u = 11

Simplifying
u = 11

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