Question

what should be added to or subtracted from 7/8 to make it equal to 15/17​

Answer 1

First we will convert them into like fractions
Lcm of 8 and 17 is 136
7*17/8*17 ; 15*8/17*8
119/136 ; 120/136
We can see that 15/17 > 7/8
Now,
7/8+x=15/17
x=120/136-119/136
x=1/136
Hence, 1/136 should be subtracted from 15/17 to get 7/8

Answer 2

Answer:

7+8=15

8+9=17

15/17

got ans

nobde