Subtract 81/30 from 28/16
1st number: 1 12/16, 2nd number: 2 21/30
28/16 - 81/30 is -19/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 30 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 16 × 15 = 240,
28/16 = 28 × 15/16 × 15 = 420/240 - Likewise, for the 2nd fraction, since 30 × 8 = 240,
81/30 = 81 × 8/30 × 8 = 648/240 - Subtract the two like fractions:
420/240 - 648/240 = 420 - 648/240 = -228/240 - After reducing the fraction, the answer is -19/20
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