Subtract 98/45 from 1/21
1st number: 1/21, 2nd number: 2 8/45
1/21 - 98/45 is -671/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 21 × 15 = 315,
1/21 = 1 × 15/21 × 15 = 15/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
98/45 = 98 × 7/45 × 7 = 686/315 - Subtract the two like fractions:
15/315 - 686/315 = 15 - 686/315 = -671/315
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