(a) At first, check if the two given pairs are equivalent,

We will do following steps:

Hence,

We can clearly observe that,

Both the given pairs are equivalent

(b) At first, check if the two given pairs are equivalent,

We will do following steps:

Hence,

We can clearly observe that,

The given pair of fractions is not equivalent

(c) At first, check if the two given pairs are equivalent,

We will do following steps:

Hence,

We can clearly observe that,

The given pair of fractions is not equivalent