Subtract 21/36 from 40/20
1st number: 2 0/20, 2nd number: 21/36
40/20 - 21/36 is 17/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
40/20 = 40 × 9/20 × 9 = 360/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
21/36 = 21 × 5/36 × 5 = 105/180 - Subtract the two like fractions:
360/180 - 105/180 = 360 - 105/180 = 255/180 - After reducing the fraction, the answer is 17/12
- In mixed form: 15/12
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