Subtract 80/27 from 42/72
1st number: 42/72, 2nd number: 2 26/27
42/72 - 80/27 is -257/108.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 27 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 72 × 3 = 216,
42/72 = 42 × 3/72 × 3 = 126/216 - Likewise, for the 2nd fraction, since 27 × 8 = 216,
80/27 = 80 × 8/27 × 8 = 640/216 - Subtract the two like fractions:
126/216 - 640/216 = 126 - 640/216 = -514/216 - After reducing the fraction, the answer is -257/108
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