Subtract 42/9 from 28/60
1st number: 28/60, 2nd number: 4 6/9
28/60 - 42/9 is -21/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
28/60 = 28 × 3/60 × 3 = 84/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
42/9 = 42 × 20/9 × 20 = 840/180 - Subtract the two like fractions:
84/180 - 840/180 = 84 - 840/180 = -756/180 - After reducing the fraction, the answer is -21/5
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