Subtract 3/24 from 21/70
21/70 - 3/24 is 7/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 24 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 70 × 12 = 840,
21/70 = 21 × 12/70 × 12 = 252/840 - Likewise, for the 2nd fraction, since 24 × 35 = 840,
3/24 = 3 × 35/24 × 35 = 105/840 - Subtract the two like fractions:
252/840 - 105/840 = 252 - 105/840 = 147/840 - After reducing the fraction, the answer is 7/40
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