Express the ratio as fraction 21 : 7/9

It's Result show 4/7how?

21:7/9 how do you get answerof 4/7

To express the ratio 21:7/9 as a fraction, we need to convert the mixed number 7/9 into an improper fraction.

First, multiply the whole number (7) by the denominator (9) and add the numerator (9) to get the new numerator, which is 63. Keep the denominator (9) the same.

So, the mixed number 7/9 can be written as an improper fraction, which is 63/9.

Now, we can express the ratio 21:7/9 as a fraction by writing the first term (21) as the numerator and the second term (63/9) as the denominator.

Therefore, the ratio 21:7/9 can be expressed as the fraction 21/(63/9).

To simplify this fraction, we can multiply the numerator (21) by the reciprocal of the denominator (63/9). The reciprocal of a fraction is obtained by swapping the numerator and the denominator.

So, the reciprocal of 63/9 is 9/63.

Multiplying 21 by 9/63, we get:
21 * 9/63 = 189/63.

Therefore, the ratio 21:7/9 can be expressed as the fraction 189/63.

answer in book is 4/7 and may be it's wrong

How we can 4/7 answer?

21:(7/9) = 21/(7/9) = 21*9/7 = 3*9 = 27/1

27:7/9