-21=3h

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Solution for -21=3h equation:


Simplifying
-21 = 3h

Solving
-21 = 3h

Solving for variable 'h'.

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

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

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

Add '21' to each side of the equation.
-21 + 21 + -3h = 0 + 21

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

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

Divide each side by '-3'.
h = -7

Simplifying
h = -7

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