Subtract 42/54 from 8/72
8/72 - 42/54 is -2/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 54 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 72 × 3 = 216,
8/72 = 8 × 3/72 × 3 = 24/216 - Likewise, for the 2nd fraction, since 54 × 4 = 216,
42/54 = 42 × 4/54 × 4 = 168/216 - Subtract the two like fractions:
24/216 - 168/216 = 24 - 168/216 = -144/216 - After reducing the fraction, the answer is -2/3
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