31-h=21

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Solution for 31-h=21 equation:


Simplifying
31 + -1h = 21

Solving
31 + -1h = 21

Solving for variable 'h'.

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

Add '-31' to each side of the equation.
31 + -31 + -1h = 21 + -31

Combine like terms: 31 + -31 = 0
0 + -1h = 21 + -31
-1h = 21 + -31

Combine like terms: 21 + -31 = -10
-1h = -10

Divide each side by '-1'.
h = 10

Simplifying
h = 10

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