42=8h+13h

Solution for 42=8h+13h equation:

Simplifying
42 = 8h + 13h

Combine like terms: 8h + 13h = 21h
42 = 21h

Solving
42 = 21h

Solving for variable 'h'.

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

Add '-21h' to each side of the equation.
42 + -21h = 21h + -21h

Combine like terms: 21h + -21h = 0
42 + -21h = 0

Add '-42' to each side of the equation.
42 + -42 + -21h = 0 + -42

Combine like terms: 42 + -42 = 0
0 + -21h = 0 + -42
-21h = 0 + -42

Combine like terms: 0 + -42 = -42
-21h = -42

Divide each side by '-21'.
h = 2

Simplifying
h = 2