Solve

h=30r+20

there is nothing to be solved. h equals 30r plus 20.

To solve the equation h = 30r + 20, you need to isolate the variable r on one side of the equation.

Step 1: Start with the given equation h = 30r + 20.

Step 2: Subtract 20 from both sides of the equation to get rid of the constant term:
h - 20 = 30r.

Step 3: Divide both sides of the equation by 30 to isolate r:
(h - 20) / 30 = r.

So the solution to the equation h = 30r + 20 is r = (h - 20) / 30.