12h+13-4h=6h+21

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Solution for 12h+13-4h=6h+21 equation:


Simplifying
12h + 13 + -4h = 6h + 21

Reorder the terms:
13 + 12h + -4h = 6h + 21

Combine like terms: 12h + -4h = 8h
13 + 8h = 6h + 21

Reorder the terms:
13 + 8h = 21 + 6h

Solving
13 + 8h = 21 + 6h

Solving for variable 'h'.

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

Add '-6h' to each side of the equation.
13 + 8h + -6h = 21 + 6h + -6h

Combine like terms: 8h + -6h = 2h
13 + 2h = 21 + 6h + -6h

Combine like terms: 6h + -6h = 0
13 + 2h = 21 + 0
13 + 2h = 21

Add '-13' to each side of the equation.
13 + -13 + 2h = 21 + -13

Combine like terms: 13 + -13 = 0
0 + 2h = 21 + -13
2h = 21 + -13

Combine like terms: 21 + -13 = 8
2h = 8

Divide each side by '2'.
h = 4

Simplifying
h = 4

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