42=3(n-3h)

Solution for 42=3(n-3h) equation:

Simplifying
42 = 3(n + -3h)

Reorder the terms:
42 = 3(-3h + n)
42 = (-3h * 3 + n * 3)
42 = (-9h + 3n)

Solving
42 = -9h + 3n

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.
42 + 9h = -9h + 9h + 3n

Combine like terms: -9h + 9h = 0
42 + 9h = 0 + 3n
42 + 9h = 3n

Add '-42' to each side of the equation.
42 + -42 + 9h = -42 + 3n

Combine like terms: 42 + -42 = 0
0 + 9h = -42 + 3n
9h = -42 + 3n

Divide each side by '9'.
h = -4.666666667 + 0.3333333333n

Simplifying
h = -4.666666667 + 0.3333333333n