Question

The product of 2 rational numbers is -3/7 if one of the number is 5/21, find the other

Answer 1

Answer:

Product of 2 rational numbers = -3\7

one number = 5\21

Let the second number be x

The equation so formed ,

5\21 [x] = -3\7

5x = -3 X 21 \ 7

x = -9 \5

We have got the value of x as -9\5

Lets verify ,

-9\5 X 5\21 = -3\7

-9 X 1\21 = -3\7

-3 X 1\ 7 = -3\7

-3\7 = -3\7

Hence , verified !!!

So the required value of x is -9\5

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