Subtract 90/21 from 45/24
1st number: 1 21/24, 2nd number: 4 6/21
45/24 - 90/21 is -135/56.
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,
45/24 = 45 × 7/24 × 7 = 315/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
90/21 = 90 × 8/21 × 8 = 720/168 - Subtract the two like fractions:
315/168 - 720/168 = 315 - 720/168 = -405/168 - After reducing the fraction, the answer is -135/56
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