LEARN MATH STEP BY STEP THROUGH VERY EASY PROCESS

SUBTRACTION OF FRACTION

__SUBTRACTION OF
FRACTIONAL NUMBER __

**1) 5/20 - 4/30 = ?**

**Step.1**** - first find LCM of ‘Denominators’ 20 & 30. **

** LCM = 5 x 2 x 2 x 3 = 60,**

**So, LCM
of 20 & 30 = 60, put 60 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’ & earlier
obtained quotient. 60 ÷ 20 = 3 ; 5 X 3 = 15. So, 15 is 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’ & earlier
obtained quotient. 60 ÷ 30 = 2 ; 4 X 2 = 8. So, 8 is the new ‘Numerator’ of 2^{nd} fraction **

**Step.4****
– Now, subtract two new ‘Numerators’ obtained from two separate Fraction. 15 - 8 = 7 is new ‘Numerator’ . **

** So, the answer
is 7/60.**** **