u-31+u-31=u

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Solution for u-31+u-31=u equation:


Simplifying
u + -31 + u + -31 = u

Reorder the terms:
-31 + -31 + u + u = u

Combine like terms: -31 + -31 = -62
-62 + u + u = u

Combine like terms: u + u = 2u
-62 + 2u = u

Solving
-62 + 2u = u

Solving for variable 'u'.

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

Add '-1u' to each side of the equation.
-62 + 2u + -1u = u + -1u

Combine like terms: 2u + -1u = 1u
-62 + 1u = u + -1u

Combine like terms: u + -1u = 0
-62 + 1u = 0

Add '62' to each side of the equation.
-62 + 62 + 1u = 0 + 62

Combine like terms: -62 + 62 = 0
0 + 1u = 0 + 62
1u = 0 + 62

Combine like terms: 0 + 62 = 62
1u = 62

Divide each side by '1'.
u = 62

Simplifying
u = 62

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