Subtract 75/20 from 21/36
1st number: 21/36, 2nd number: 3 15/20
21/36 - 75/20 is -19/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 20 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 20 × 9 = 180,
75/20 = 75 × 9/20 × 9 = 675/180 - Subtract the two like fractions:
105/180 - 675/180 = 105 - 675/180 = -570/180 - After reducing the fraction, the answer is -19/6
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