Subtract 20/72 from 45/12
1st number: 3 9/12, 2nd number: 20/72
45/12 - 20/72 is 125/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 12 × 6 = 72,
45/12 = 45 × 6/12 × 6 = 270/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
20/72 = 20 × 1/72 × 1 = 20/72 - Subtract the two like fractions:
270/72 - 20/72 = 270 - 20/72 = 250/72 - After reducing the fraction, the answer is 125/36
- In mixed form: 317/36
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