Subtract 9/72 from 20/10
1st number: 2 0/10, 2nd number: 9/72
20/10 - 9/72 is 15/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 10 × 36 = 360,
20/10 = 20 × 36/10 × 36 = 720/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
9/72 = 9 × 5/72 × 5 = 45/360 - Subtract the two like fractions:
720/360 - 45/360 = 720 - 45/360 = 675/360 - After reducing the fraction, the answer is 15/8
- In mixed form: 17/8
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