Subtract 21/27 from 7/4
1st number: 1 3/4, 2nd number: 21/27
7/4 - 21/27 is 35/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 4 × 27 = 108,
7/4 = 7 × 27/4 × 27 = 189/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
21/27 = 21 × 4/27 × 4 = 84/108 - Subtract the two like fractions:
189/108 - 84/108 = 189 - 84/108 = 105/108 - After reducing the fraction, the answer is 35/36
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