Subtract 40/20 from 72/30
1st number: 2 12/30, 2nd number: 2 0/20
72/30 - 40/20 is 2/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
72/30 = 72 × 2/30 × 2 = 144/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
40/20 = 40 × 3/20 × 3 = 120/60 - Subtract the two like fractions:
144/60 - 120/60 = 144 - 120/60 = 24/60 - After reducing the fraction, the answer is 2/5
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