Answer:
x+20 * 3
Step-by-step explanation:
* represents a multiplication symbol
r = 1/5 or 0.2
5/6r = 1/6
Divide everything by 5/6
6/30 simplified is 1/5.
(-4)³ = -64
(4)⁻³ = 1/64
9 is an rational number because it is a whole number