Subtract 28/24 from 9/42
1st number: 9/42, 2nd number: 1 4/24
9/42 - 28/24 is -20/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
9/42 = 9 × 4/42 × 4 = 36/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
28/24 = 28 × 7/24 × 7 = 196/168 - Subtract the two like fractions:
36/168 - 196/168 = 36 - 196/168 = -160/168 - After reducing the fraction, the answer is -20/21
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