Subtract 42/18 from 8/72
1st number: 8/72, 2nd number: 2 6/18
8/72 - 42/18 is -20/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
8/72 = 8 × 1/72 × 1 = 8/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
42/18 = 42 × 4/18 × 4 = 168/72 - Subtract the two like fractions:
8/72 - 168/72 = 8 - 168/72 = -160/72 - After reducing the fraction, the answer is -20/9
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