Subtract 30/4 from 21/36
1st number: 21/36, 2nd number: 7 2/4
21/36 - 30/4 is -83/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 36 × 1 = 36,
21/36 = 21 × 1/36 × 1 = 21/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
30/4 = 30 × 9/4 × 9 = 270/36 - Subtract the two like fractions:
21/36 - 270/36 = 21 - 270/36 = -249/36 - After reducing the fraction, the answer is -83/12
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