Answer:
just need to add those fractions but we must make them similar fractions because they don't have similar denominator.
LCD(8, 5) = 40
3/8 = 15/40
2/5 = 16/40
.
Now, let's add them and subtract to 1 to determine the fraction of the job undone.
1 - (15/40 + 16/40)
= 1 - 31/40
= 40/40 - 31/40
(Note: I used 40/40 to replace 1. Any number divided by itself is equal to 1.)
= 9/40
Step-by-step explanation:
