9h-3=-21

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Solution for 9h-3=-21 equation: 


Simplifying
9h + -3 = -21

Reorder the terms:
-3 + 9h = -21

Solving
-3 + 9h = -21

Solving for variable 'h'.

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

Add '3' to each side of the equation.
-3 + 3 + 9h = -21 + 3

Combine like terms: -3 + 3 = 0
0 + 9h = -21 + 3
9h = -21 + 3

Combine like terms: -21 + 3 = -18
9h = -18

Divide each side by '9'.
h = -2

Simplifying
h = -2

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