Subtract 7/14 from 21/70
21/70 - 7/14 is -1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 14 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
21/70 = 21 × 1/70 × 1 = 21/70 - Likewise, for the 2nd fraction, since 14 × 5 = 70,
7/14 = 7 × 5/14 × 5 = 35/70 - Subtract the two like fractions:
21/70 - 35/70 = 21 - 35/70 = -14/70 - After reducing the fraction, the answer is -1/5
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