u+11=2u-21

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Solution for u+11=2u-21 equation:


Simplifying
u + 11 = 2u + -21

Reorder the terms:
11 + u = 2u + -21

Reorder the terms:
11 + u = -21 + 2u

Solving
11 + u = -21 + 2u

Solving for variable 'u'.

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

Add '-2u' to each side of the equation.
11 + u + -2u = -21 + 2u + -2u

Combine like terms: u + -2u = -1u
11 + -1u = -21 + 2u + -2u

Combine like terms: 2u + -2u = 0
11 + -1u = -21 + 0
11 + -1u = -21

Add '-11' to each side of the equation.
11 + -11 + -1u = -21 + -11

Combine like terms: 11 + -11 = 0
0 + -1u = -21 + -11
-1u = -21 + -11

Combine like terms: -21 + -11 = -32
-1u = -32

Divide each side by '-1'.
u = 32

Simplifying
u = 32

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