Answer:
1. 9/4
2. 5/14 or 0.3571528
3. 11/20 or 0.55
4. 31/12 or 2.583
Step-by-step explanation:
1. 11/2 + 3/4
convert the expression
3/2 + 3/4
calculate the sum
= 9/4
2. 6/7 - 1/2
transform the equation
12-7/14
calculate
= 5/14 or 0.3571528
3. 11/8 × 2/5
reduce the number with the greatest common factor 2
11/4 × 1/5
multiply
= 11/20 or 0.55
4. 2 1/3 + 1/4
convert expression into improper fraction
7/3 + 1/4
calculate the sum
= 31/12 or 2.583
