Subtract 45/30 from 21/36
1st number: 21/36, 2nd number: 1 15/30
21/36 - 45/30 is -11/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 30 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
21/36 = 21 × 5/36 × 5 = 105/180 - Likewise, for the 2nd fraction, since 30 × 6 = 180,
45/30 = 45 × 6/30 × 6 = 270/180 - Subtract the two like fractions:
105/180 - 270/180 = 105 - 270/180 = -165/180 - After reducing the fraction, the answer is -11/12
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