20=h-3(5-2h)

Solution for 20=h-3(5-2h) equation:

Simplifying
20 = h + -3(5 + -2h)
20 = h + (5 * -3 + -2h * -3)
20 = h + (-15 + 6h)

Reorder the terms:
20 = -15 + h + 6h

Combine like terms: h + 6h = 7h
20 = -15 + 7h

Solving
20 = -15 + 7h

Solving for variable 'h'.

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

Add '-7h' to each side of the equation.
20 + -7h = -15 + 7h + -7h

Combine like terms: 7h + -7h = 0
20 + -7h = -15 + 0
20 + -7h = -15

Add '-20' to each side of the equation.
20 + -20 + -7h = -15 + -20

Combine like terms: 20 + -20 = 0
0 + -7h = -15 + -20
-7h = -15 + -20

Combine like terms: -15 + -20 = -35
-7h = -35

Divide each side by '-7'.
h = 5

Simplifying
h = 5