Subtract 21/5 from 90/24
1st number: 3 18/24, 2nd number: 4 1/5
90/24 - 21/5 is -9/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 5 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
90/24 = 90 × 5/24 × 5 = 450/120 - Likewise, for the 2nd fraction, since 5 × 24 = 120,
21/5 = 21 × 24/5 × 24 = 504/120 - Subtract the two like fractions:
450/120 - 504/120 = 450 - 504/120 = -54/120 - After reducing the fraction, the answer is -9/20
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