Subtract 21/70 from 20/24
20/24 - 21/70 is 8/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 70 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 24 × 35 = 840,
20/24 = 20 × 35/24 × 35 = 700/840 - Likewise, for the 2nd fraction, since 70 × 12 = 840,
21/70 = 21 × 12/70 × 12 = 252/840 - Subtract the two like fractions:
700/840 - 252/840 = 700 - 252/840 = 448/840 - After reducing the fraction, the answer is 8/15
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