4h-21=5-9h

Solution for 4h-21=5-9h equation:

Simplifying
4h + -21 = 5 + -9h

Reorder the terms:
-21 + 4h = 5 + -9h

Solving
-21 + 4h = 5 + -9h

Solving for variable 'h'.

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

Add '9h' to each side of the equation.
-21 + 4h + 9h = 5 + -9h + 9h

Combine like terms: 4h + 9h = 13h
-21 + 13h = 5 + -9h + 9h

Combine like terms: -9h + 9h = 0
-21 + 13h = 5 + 0
-21 + 13h = 5

Add '21' to each side of the equation.
-21 + 21 + 13h = 5 + 21

Combine like terms: -21 + 21 = 0
0 + 13h = 5 + 21
13h = 5 + 21

Combine like terms: 5 + 21 = 26
13h = 26

Divide each side by '13'.
h = 2

Simplifying
h = 2