Subtract 70/84 from 21/10
1st number: 2 1/10, 2nd number: 70/84
21/10 - 70/84 is 19/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 10 × 42 = 420,
21/10 = 21 × 42/10 × 42 = 882/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
70/84 = 70 × 5/84 × 5 = 350/420 - Subtract the two like fractions:
882/420 - 350/420 = 882 - 350/420 = 532/420 - After reducing the fraction, the answer is 19/15
- In mixed form: 14/15
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