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Question

Express 34 as a rational number with denominator:
(i) 20
(ii) 36
(iii) 44
(iv) −80


Solution

3/4 as rational number with denominator:

(i)
20 is:3×54×5=1520 (multiplying numerator and denominator by 5)


(ii)
36 is:3×94×9 = 2736 (multiplying numerator and denominator by 9)


(iii)
44 is:3×114×11 = 3344 (multiplying numerator and denominator by 11)

(iv)
-80 is:3×-204×-20 = -60-80 (multiplying numerator and denominator by -20)

Mathematics
RD Sharma (2014)
Standard VII

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