Subtract 42/72 from 3/27
3/27 - 42/72 is -17/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 72 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 27 × 8 = 216,
3/27 = 3 × 8/27 × 8 = 24/216 - Likewise, for the 2nd fraction, since 72 × 3 = 216,
42/72 = 42 × 3/72 × 3 = 126/216 - Subtract the two like fractions:
24/216 - 126/216 = 24 - 126/216 = -102/216 - After reducing the fraction, the answer is -17/36
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