CLASS-5
SUBTRACTION OF FRACTIONAL NUMBER

Step.1 - first find LCM of ‘Denominators’ 12 & 24. 

LCM = 2 x 3 x 3 x (2 x 3) = 108

So, LCM of 36 & 54 = 108, put 108 as ‘Denominator’ at next step.

Step.2 – Divide by denominator of 1^st fraction to LCM, after getting the quotient from this divide, multiply it’s ‘Numerator’ with the obtained quotient. 108 ÷ 54 = 2 ; 5 X 2 = 10. So, 10 the new ‘Numerator’ of 1^st fraction.

Step.3 – Divide by denominator of 2^nd fraction to LCM, after getting the quotient from this divide, multiply it’s ‘Numerator’ with the obtained quotient. 108 ÷ 36 = 3 ; 4 X 3 = 12. So, 12 is the new ‘Numerator’ of 2^nd fraction.

Step.4 – Now subtract between two new ‘Numerator’ obtained from two  Separate fraction. 12 – 10 = 2 . so, 2 is the new ‘Numerator’  So, the answer is 2/108.