5h-9=21

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Solution for 5h-9=21 equation: 


Simplifying
5h + -9 = 21

Reorder the terms:
-9 + 5h = 21

Solving
-9 + 5h = 21

Solving for variable 'h'.

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

Add '9' to each side of the equation.
-9 + 9 + 5h = 21 + 9

Combine like terms: -9 + 9 = 0
0 + 5h = 21 + 9
5h = 21 + 9

Combine like terms: 21 + 9 = 30
5h = 30

Divide each side by '5'.
h = 6

Simplifying
h = 6

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