Subtract 12/60 from 15/21
15/21 - 12/60 is 18/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
15/21 = 15 × 20/21 × 20 = 300/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
12/60 = 12 × 7/60 × 7 = 84/420 - Subtract the two like fractions:
300/420 - 84/420 = 300 - 84/420 = 216/420 - After reducing the fraction, the answer is 18/35
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