Subtract 60/45 from 20/90
1st number: 20/90, 2nd number: 1 15/45
20/90 - 60/45 is -10/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
20/90 = 20 × 1/90 × 1 = 20/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
60/45 = 60 × 2/45 × 2 = 120/90 - Subtract the two like fractions:
20/90 - 120/90 = 20 - 120/90 = -100/90 - After reducing the fraction, the answer is -10/9
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