Question

-3
7. Express as a rational number with
7
(i) numerator = 12
(iii) denominator = -49
(ii) numerator = -15
(iv) denominator = 84
give the process ​

Answer 1

Answer:

standard form of rational number is when the fraction is fully simplified and negative sign is located near the numerator if the number is negative.

(i) if numerator is 12, then according to the question, denominator is 7. so, the rational number is 12/7 and 12/7 cannot be further divided.

hence, ans: 12/7

(ii) if denominator is -49, then numerator is 7.

rational number = 7/-49. Denominator is negative, so I place it beside the numerator and the number becomes, -7/49. 7 and 49 can be divided by 7, and the number becomes -1/7. -1/7 cannot be divided further and hence ans = -1/7.

(iii) rational number = -15/7. We don't need to change it as the negative sign is located near the numerator and the number cannot be further divided. Hence,ans = -15/7.

(iv) rational number = 7/84. 7 and 84 can be divided by 7, so the rational number can be simplified to 1/12. Hence ans = 1/12.