Subtract 21/70 from 15/12
1st number: 1 3/12, 2nd number: 21/70
15/12 - 21/70 is 19/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
15/12 = 15 × 35/12 × 35 = 525/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
21/70 = 21 × 6/70 × 6 = 126/420 - Subtract the two like fractions:
525/420 - 126/420 = 525 - 126/420 = 399/420 - After reducing the fraction, the answer is 19/20
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