Subtract 98/21 from 98/30
1st number: 3 8/30, 2nd number: 4 14/21
98/30 - 98/21 is -7/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
98/30 = 98 × 7/30 × 7 = 686/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
98/21 = 98 × 10/21 × 10 = 980/210 - Subtract the two like fractions:
686/210 - 980/210 = 686 - 980/210 = -294/210 - After reducing the fraction, the answer is -7/5
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