10h+21=15-2h

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Solution for 10h+21=15-2h equation:


Simplifying
10h + 21 = 15 + -2h

Reorder the terms:
21 + 10h = 15 + -2h

Solving
21 + 10h = 15 + -2h

Solving for variable 'h'.

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

Add '2h' to each side of the equation.
21 + 10h + 2h = 15 + -2h + 2h

Combine like terms: 10h + 2h = 12h
21 + 12h = 15 + -2h + 2h

Combine like terms: -2h + 2h = 0
21 + 12h = 15 + 0
21 + 12h = 15

Add '-21' to each side of the equation.
21 + -21 + 12h = 15 + -21

Combine like terms: 21 + -21 = 0
0 + 12h = 15 + -21
12h = 15 + -21

Combine like terms: 15 + -21 = -6
12h = -6

Divide each side by '12'.
h = -0.5

Simplifying
h = -0.5

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