Subtract 30/84 from 21/14
1st number: 1 7/14, 2nd number: 30/84
21/14 - 30/84 is 8/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 14 × 6 = 84,
21/14 = 21 × 6/14 × 6 = 126/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
30/84 = 30 × 1/84 × 1 = 30/84 - Subtract the two like fractions:
126/84 - 30/84 = 126 - 30/84 = 96/84 - After reducing the fraction, the answer is 8/7
- In mixed form: 11/7
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