Subtract 21/7 from 2/10
1st number: 2/10, 2nd number: 3 0/7
2/10 - 21/7 is -14/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
2/10 = 2 × 7/10 × 7 = 14/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
21/7 = 21 × 10/7 × 10 = 210/70 - Subtract the two like fractions:
14/70 - 210/70 = 14 - 210/70 = -196/70 - After reducing the fraction, the answer is -14/5
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