31=3u+10

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Solution for 31=3u+10 equation:


Simplifying
31 = 3u + 10

Reorder the terms:
31 = 10 + 3u

Solving
31 = 10 + 3u

Solving for variable 'u'.

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

Add '-3u' to each side of the equation.
31 + -3u = 10 + 3u + -3u

Combine like terms: 3u + -3u = 0
31 + -3u = 10 + 0
31 + -3u = 10

Add '-31' to each side of the equation.
31 + -31 + -3u = 10 + -31

Combine like terms: 31 + -31 = 0
0 + -3u = 10 + -31
-3u = 10 + -31

Combine like terms: 10 + -31 = -21
-3u = -21

Divide each side by '-3'.
u = 7

Simplifying
u = 7

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