Subtract 72/27 from 72/45
1st number: 1 27/45, 2nd number: 2 18/27
72/45 - 72/27 is -16/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 45 × 3 = 135,
72/45 = 72 × 3/45 × 3 = 216/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
72/27 = 72 × 5/27 × 5 = 360/135 - Subtract the two like fractions:
216/135 - 360/135 = 216 - 360/135 = -144/135 - After reducing the fraction, the answer is -16/15
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