Subtract 90/24 from 42/15
1st number: 2 12/15, 2nd number: 3 18/24
42/15 - 90/24 is -19/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
42/15 = 42 × 8/15 × 8 = 336/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
90/24 = 90 × 5/24 × 5 = 450/120 - Subtract the two like fractions:
336/120 - 450/120 = 336 - 450/120 = -114/120 - After reducing the fraction, the answer is -19/20
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