Question

By what numbers should be multiply -15/20 so that the product may be -5/7 ?

Answer 1

Divide -5/7 and -15/20
-5/7÷-15/20
=-5/7×(-20/15)

=20/21 - Answer

Answer 2

-15/20 × x =-5/7 ( let x be the required number).
x= -5/7×20/-15
x=-100/-105
x=20/21.

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