Question

What should be added to  1/2+1/3+1/5  to get 4?​

Answer 1

Answer:

1/2 + 1/3 + 1/5 + x = 4

LCM is 30

15/30 + 10/30 + 6/30 + x + 4

31/30 + x = 4

x = 4 - 31/30

LCM is 30

x = 120/30 - 31/30

X = 89/30