u-2u+20=12

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Solution for u-2u+20=12 equation:


Simplifying
u + -2u + 20 = 12

Reorder the terms:
20 + u + -2u = 12

Combine like terms: u + -2u = -1u
20 + -1u = 12

Solving
20 + -1u = 12

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 + -1u = 12 + -20

Combine like terms: 20 + -20 = 0
0 + -1u = 12 + -20
-1u = 12 + -20

Combine like terms: 12 + -20 = -8
-1u = -8

Divide each side by '-1'.
u = 8

Simplifying
u = 8

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