Solve each equation. Check your answer

r/238=8

You have to get r by itself on one side. Multiply both sides by 238 to cancel it out of the denominator on the left side.

You are left with r = 8 * 238 or r = 1904.

To check, plug 1904 back into the equation.

1904 : 238 = 8

8 = 8 (True)