Subtract 72/9 from 80/30
1st number: 2 20/30, 2nd number: 8 0/9
80/30 - 72/9 is -16/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
80/30 = 80 × 3/30 × 3 = 240/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
72/9 = 72 × 10/9 × 10 = 720/90 - Subtract the two like fractions:
240/90 - 720/90 = 240 - 720/90 = -480/90 - After reducing the fraction, the answer is -16/3
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