21-2h=13

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Solution for 21-2h=13 equation: 


Simplifying
21 + -2h = 13

Solving
21 + -2h = 13

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 + -2h = 13 + -21

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

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

Divide each side by '-2'.
h = 4

Simplifying
h = 4

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