21+h-9=2

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Solution for 21+h-9=2 equation: 


Simplifying
21 + h + -9 = 2

Reorder the terms:
21 + -9 + h = 2

Combine like terms: 21 + -9 = 12
12 + h = 2

Solving
12 + h = 2

Solving for variable 'h'.

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

Add '-12' to each side of the equation.
12 + -12 + h = 2 + -12

Combine like terms: 12 + -12 = 0
0 + h = 2 + -12
h = 2 + -12

Combine like terms: 2 + -12 = -10
h = -10

Simplifying
h = -10

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