Answer:

13/8

Step-by-step explanation:

As we don't know the value of the third fraction now, let us assume it as x!

So,

12/7 × 1/6 × x = 13/28

⇒ (12/7 × 1/6) × x = 13/28

⇒ 2/7 × x = 13/28

⇒ x = 13/28 ÷ 2/7

⇒ x = 13/28 × 7/2

⇒ x = 13/28 × 7/2

⇒ x = 13/4 × 1/2 (As we divided the fraction by 7)

⇒ x = 13/8

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Answer:

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