42=10-4h

Solution for 42=10-4h equation:

Simplifying
42 = 10 + -4h

Solving
42 = 10 + -4h

Solving for variable 'h'.

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

Add '4h' to each side of the equation.
42 + 4h = 10 + -4h + 4h

Combine like terms: -4h + 4h = 0
42 + 4h = 10 + 0
42 + 4h = 10

Add '-42' to each side of the equation.
42 + -42 + 4h = 10 + -42

Combine like terms: 42 + -42 = 0
0 + 4h = 10 + -42
4h = 10 + -42

Combine like terms: 10 + -42 = -32
4h = -32

Divide each side by '4'.
h = -8

Simplifying
h = -8