21+4h=57

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Solution for 21+4h=57 equation: 


Simplifying
21 + 4h = 57

Solving
21 + 4h = 57

Solving for variable 'h'.

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

Add '-21' to each side of the equation.
21 + -21 + 4h = 57 + -21

Combine like terms: 21 + -21 = 0
0 + 4h = 57 + -21
4h = 57 + -21

Combine like terms: 57 + -21 = 36
4h = 36

Divide each side by '4'.
h = 9

Simplifying
h = 9

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