Subtract 72/27 from 7/15
1st number: 7/15, 2nd number: 2 18/27
7/15 - 72/27 is -11/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 15 × 9 = 135,
7/15 = 7 × 9/15 × 9 = 63/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
72/27 = 72 × 5/27 × 5 = 360/135 - Subtract the two like fractions:
63/135 - 360/135 = 63 - 360/135 = -297/135 - After reducing the fraction, the answer is -11/5
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