Subtract 81/16 from 20/30
1st number: 20/30, 2nd number: 5 1/16
20/30 - 81/16 is -211/48.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 16 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 30 × 8 = 240,
20/30 = 20 × 8/30 × 8 = 160/240 - Likewise, for the 2nd fraction, since 16 × 15 = 240,
81/16 = 81 × 15/16 × 15 = 1215/240 - Subtract the two like fractions:
160/240 - 1215/240 = 160 - 1215/240 = -1055/240 - After reducing the fraction, the answer is -211/48
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