Subtract 27/60 from 28/80
28/80 - 27/60 is -1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 60 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
28/80 = 28 × 3/80 × 3 = 84/240 - Likewise, for the 2nd fraction, since 60 × 4 = 240,
27/60 = 27 × 4/60 × 4 = 108/240 - Subtract the two like fractions:
84/240 - 108/240 = 84 - 108/240 = -24/240 - After reducing the fraction, the answer is -1/10
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