Subtract 81/36 from 30/4
1st number: 7 2/4, 2nd number: 2 9/36
30/4 - 81/36 is 21/4.
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,
30/4 = 30 × 9/4 × 9 = 270/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
81/36 = 81 × 1/36 × 1 = 81/36 - Subtract the two like fractions:
270/36 - 81/36 = 270 - 81/36 = 189/36 - After reducing the fraction, the answer is 21/4
- In mixed form: 51/4
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