0.3X/4 = 0.5/3
Assuming the "X" means the variable "x":
x = 20/9 or 2.2222222222222222222222...
You didn't ask for an explanation, so I didn't give one.
multiply both sides by 12 (the least common multiple of 3 and 4)
. 9 x = 2
x = 2/.9 = 20/9
it says to express my answer as a common answer
Then it'll be 2 2/9.
Do mean to express your answer as a common fraction?
Both Damon and Sheenybeany posted a common fraction as the answer.