Subtract 18/9 from 72/90
1st number: 72/90, 2nd number: 2 0/9
72/90 - 18/9 is -6/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
72/90 = 72 × 1/90 × 1 = 72/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
18/9 = 18 × 10/9 × 10 = 180/90 - Subtract the two like fractions:
72/90 - 180/90 = 72 - 180/90 = -108/90 - After reducing the fraction, the answer is -6/5
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