Question

simplify wrong answers will be reported​

Answer 1

Answer:

a. 9/4 - 3/5 = 33/20

c.5/7-4/21= 11/21

Step-by-step explanation:

9/4 - 3/5

Lcm of 4 and 5 = 20

9x 5 - 3x4 /20

45-12/20

33/20

5/7-4/21

Lcm of 7 and 21 = 21

5x3 - 4x 1 /21

15-4/21

11/21

Answer 2

Step-by-step explanation:

9 - 3

4 5

45 - 12

20

33 = 1 integer 13 .

20 20

5 - 4

7 21

15 - 4

21

11 .

21

Hope it helps....