Subtract 72/45 from 20/30
1st number: 20/30, 2nd number: 1 27/45
20/30 - 72/45 is -14/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
20/30 = 20 × 3/30 × 3 = 60/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
72/45 = 72 × 2/45 × 2 = 144/90 - Subtract the two like fractions:
60/90 - 144/90 = 60 - 144/90 = -84/90 - After reducing the fraction, the answer is -14/15
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