Subtract 98/28 from 21/70
1st number: 21/70, 2nd number: 3 14/28
21/70 - 98/28 is -16/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
21/70 = 21 × 2/70 × 2 = 42/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
98/28 = 98 × 5/28 × 5 = 490/140 - Subtract the two like fractions:
42/140 - 490/140 = 42 - 490/140 = -448/140 - After reducing the fraction, the answer is -16/5
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