Subtract 72/9 from 10/20
1st number: 10/20, 2nd number: 8 0/9
10/20 - 72/9 is -15/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
10/20 = 10 × 9/20 × 9 = 90/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
72/9 = 72 × 20/9 × 20 = 1440/180 - Subtract the two like fractions:
90/180 - 1440/180 = 90 - 1440/180 = -1350/180 - After reducing the fraction, the answer is -15/2
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