Answer:
x = 456
Step-by-step explanation:
x/30 - 1/5 = 15
add 1/5 to each side
x/30 = 1/5 + 15/1
multiply each side by 5 to get common denominators
5x/30 = 76/5
multiply each side by 6 to get denominator 30
5x/30 = 2280/30
5x= 2280
divide each side by 5
x =456