Subtract 40/21 from 30/24
1st number: 1 6/24, 2nd number: 1 19/21
30/24 - 40/21 is -55/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
30/24 = 30 × 7/24 × 7 = 210/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
40/21 = 40 × 8/21 × 8 = 320/168 - Subtract the two like fractions:
210/168 - 320/168 = 210 - 320/168 = -110/168 - After reducing the fraction, the answer is -55/84
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