Subtract 20/28 from 30/9
1st number: 3 3/9, 2nd number: 20/28
30/9 - 20/28 is 55/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 9 × 28 = 252,
30/9 = 30 × 28/9 × 28 = 840/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
20/28 = 20 × 9/28 × 9 = 180/252 - Subtract the two like fractions:
840/252 - 180/252 = 840 - 180/252 = 660/252 - After reducing the fraction, the answer is 55/21
- In mixed form: 213/21
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