30=h-21

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Solution for 30=h-21 equation:


Simplifying
30 = h + -21

Reorder the terms:
30 = -21 + h

Solving
30 = -21 + h

Solving for variable 'h'.

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

Add '-1h' to each side of the equation.
30 + -1h = -21 + h + -1h

Combine like terms: h + -1h = 0
30 + -1h = -21 + 0
30 + -1h = -21

Add '-30' to each side of the equation.
30 + -30 + -1h = -21 + -30

Combine like terms: 30 + -30 = 0
0 + -1h = -21 + -30
-1h = -21 + -30

Combine like terms: -21 + -30 = -51
-1h = -51

Divide each side by '-1'.
h = 51

Simplifying
h = 51

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