31=9-2h

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Solution for 31=9-2h equation:


Simplifying
31 = 9 + -2h

Solving
31 = 9 + -2h

Solving for variable 'h'.

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

Add '2h' to each side of the equation.
31 + 2h = 9 + -2h + 2h

Combine like terms: -2h + 2h = 0
31 + 2h = 9 + 0
31 + 2h = 9

Add '-31' to each side of the equation.
31 + -31 + 2h = 9 + -31

Combine like terms: 31 + -31 = 0
0 + 2h = 9 + -31
2h = 9 + -31

Combine like terms: 9 + -31 = -22
2h = -22

Divide each side by '2'.
h = -11

Simplifying
h = -11

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