Subtract 28/10 from 21/35
1st number: 21/35, 2nd number: 2 8/10
21/35 - 28/10 is -11/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 35 × 2 = 70,
21/35 = 21 × 2/35 × 2 = 42/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
28/10 = 28 × 7/10 × 7 = 196/70 - Subtract the two like fractions:
42/70 - 196/70 = 42 - 196/70 = -154/70 - After reducing the fraction, the answer is -11/5
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