Question

By what number should we multiply -15/20 . so that the product maybe -5/7​

Answer 1

Answer:20/21

Step-by-step explanation:let the unknown number be x

-15/20 × x = -5/7

-3/4 × x = - 5/7

x = -5/7 ÷-3/4

x = -5/7 × -4/3

x = 20/21