Question

By what number should we divide-10/21 to get -2/3?

Answer 1

let the no. to be divide be x.

-10/21 ÷ x = -2/ 3

x = -2/3 ×21/10

x = - 7/5

hope that the answer is correct

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Answer 2

Let x be the reqd. no.

Solution is in the attachment