Subtract 10/15 from 90/84
1st number: 1 6/84, 2nd number: 10/15
90/84 - 10/15 is 17/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
90/84 = 90 × 5/84 × 5 = 450/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
10/15 = 10 × 28/15 × 28 = 280/420 - Subtract the two like fractions:
450/420 - 280/420 = 450 - 280/420 = 170/420 - After reducing the fraction, the answer is 17/42
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