Question

what number should be added To​

Answer 1

Answer:

5 1/4 = 21/4

7 2/5= 37/5

let the unknown number be x

21/4 + x = 37/5

x= 37/5 - 21/4 (LCM=20)

x= (148 - 105) / 20

x = 43/20

Answer 2

x + 5 1/4 = 7 2/5

x = 7 2/5 - 5 1/4

x = 37/5 - 21/4

x = (148 - 105)/20

x = 43/20

x = 2 3/20