7 2/5 - 2 3/4 =
I need to show how I got the answer
The LCD is 20.
You will get 7 8/20 - 2 15/20.
In the fraction, you can't subtract 15 from 8. Therefore you have to borrow 1 from 7. (20/20 = 1--so add 20 to 8, gives 28).
6 28/20 - 2 15/20 = 4 13/20
Thank you Barb
wow
To subtract mixed numbers like 7 2/5 - 2 3/4, follow these steps to show how to get the answer:
Step 1: Convert the mixed numbers to improper fractions.
7 2/5 can be written as (5 * 7 + 2)/5 = 37/5
2 3/4 can be written as (4 * 2 + 3)/4 = 11/4
Step 2: Find a common denominator.
To subtract fractions, we need a common denominator. In this case, the common denominator is 20, which is the least common multiple of 4 and 5.
Step 3: Rewrite the fractions using the common denominator.
37/5 becomes (37/5) * (4/4) = 148/20
11/4 becomes (11/4) * (5/5) = 55/20
Step 4: Subtract the fractions.
Subtract the numerators: 148 - 55 = 93
Keep the common denominator: 93/20
Step 5: Simplify the fraction (if needed).
In this case, the fraction is already in its simplest form, so the final answer is 93/20.
Therefore, 7 2/5 - 2 3/4 = 93/20.