Answer: 13 11/20 - 3 6/20 is 41/4.
Explanation:
To subtract mixed numbers, you need to find a common denominator for the fractions involved. In this case, the common denominator is 20.
Let's break down the problem step-by-step:
1. Convert the mixed numbers to improper fractions:
- 13 11/20 = (13 * 20 + 11)/20 = 271/20
- 3 6/20 = (3 * 20 + 6)/20 = 66/20
2. Subtract the two improper fractions:
- 271/20 - 66/20 = (271 - 66)/20 = 205/20
3. Simplify the result, if possible:
- 205/20 can be simplified by dividing both the numerator and denominator by their greatest common divisor, which is 5.
- 205/20 ÷ 5 = 41/4
So, the answer is 13 11/20 - 3 6/20 is 41/4.