Subtract 21/36 from 8/4
1st number: 2 0/4, 2nd number: 21/36
8/4 - 21/36 is 17/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
8/4 = 8 × 9/4 × 9 = 72/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
21/36 = 21 × 1/36 × 1 = 21/36 - Subtract the two like fractions:
72/36 - 21/36 = 72 - 21/36 = 51/36 - After reducing the fraction, the answer is 17/12
- In mixed form: 15/12
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