Subtract 21/9 from 90/60
1st number: 1 30/60, 2nd number: 2 3/9
90/60 - 21/9 is -5/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
90/60 = 90 × 3/60 × 3 = 270/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
21/9 = 21 × 20/9 × 20 = 420/180 - Subtract the two like fractions:
270/180 - 420/180 = 270 - 420/180 = -150/180 - After reducing the fraction, the answer is -5/6
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