Subtract 4/36 from 28/21
1st number: 1 7/21, 2nd number: 4/36
28/21 - 4/36 is 11/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 21 × 12 = 252,
28/21 = 28 × 12/21 × 12 = 336/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
4/36 = 4 × 7/36 × 7 = 28/252 - Subtract the two like fractions:
336/252 - 28/252 = 336 - 28/252 = 308/252 - After reducing the fraction, the answer is 11/9
- In mixed form: 12/9
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