3u-10=20

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Solution for 3u-10=20 equation: 


Simplifying
3u + -10 = 20

Reorder the terms:
-10 + 3u = 20

Solving
-10 + 3u = 20

Solving for variable 'u'.

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

Add '10' to each side of the equation.
-10 + 10 + 3u = 20 + 10

Combine like terms: -10 + 10 = 0
0 + 3u = 20 + 10
3u = 20 + 10

Combine like terms: 20 + 10 = 30
3u = 30

Divide each side by '3'.
u = 10

Simplifying
u = 10

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