Question

Express -2/7 as a rational whose denominatoris -21.​

Answer 1

Answer:

-6/21

Step-by-step explanation:

Given,

-2/7 = ?/21

Let the numerator be x

-2/7 = x/21

-2/7×3 = x/21

Multiplying 3 on both sides

-2×3/7×3 =-6/21

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