7h+4=12h+21

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Solution for 7h+4=12h+21 equation:


Simplifying
7h + 4 = 12h + 21

Reorder the terms:
4 + 7h = 12h + 21

Reorder the terms:
4 + 7h = 21 + 12h

Solving
4 + 7h = 21 + 12h

Solving for variable 'h'.

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

Add '-12h' to each side of the equation.
4 + 7h + -12h = 21 + 12h + -12h

Combine like terms: 7h + -12h = -5h
4 + -5h = 21 + 12h + -12h

Combine like terms: 12h + -12h = 0
4 + -5h = 21 + 0
4 + -5h = 21

Add '-4' to each side of the equation.
4 + -4 + -5h = 21 + -4

Combine like terms: 4 + -4 = 0
0 + -5h = 21 + -4
-5h = 21 + -4

Combine like terms: 21 + -4 = 17
-5h = 17

Divide each side by '-5'.
h = -3.4

Simplifying
h = -3.4

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