Respuesta :

Answer:

21

Step-by-step explanation:

5×3=15

7×3=21

devishri1977

Answer:

Step-by-step explanation:

a) The denominators of variable terms is 5 and 3

As both are prime, least common denominator = 5*3 = 15

b) The denominators of constant terms is 7 and 3

Least common denominator = 7*3 = 21

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