Question

12/16 - 7/18 in simplest form​

Answer 1

The answer is
`(13)/(36)`

Explanation:

The formula is:

`(a)/(b) -  (c)/(d)  =  (ad - bc)/(bd)`

In this case :

`(12)/(16)  - (7)/(18) =  (12 x 18 - 16x17)/(16x18) = (216 -112 )/(288) = (104)/(288)`

To get the simples form notice both 104 and 288 are divisible by 8 and 104/8 = 13 and 288/8 = 36.

Thus
`(104)/(288) = (13)/(36)`