7h-21-2h=8h

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Solution for 7h-21-2h=8h equation:


Simplifying
7h + -21 + -2h = 8h

Reorder the terms:
-21 + 7h + -2h = 8h

Combine like terms: 7h + -2h = 5h
-21 + 5h = 8h

Solving
-21 + 5h = 8h

Solving for variable 'h'.

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

Add '-8h' to each side of the equation.
-21 + 5h + -8h = 8h + -8h

Combine like terms: 5h + -8h = -3h
-21 + -3h = 8h + -8h

Combine like terms: 8h + -8h = 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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