Subtract 90/45 from 30/18
1st number: 1 12/18, 2nd number: 2 0/45
30/18 - 90/45 is -1/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
30/18 = 30 × 5/18 × 5 = 150/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
90/45 = 90 × 2/45 × 2 = 180/90 - Subtract the two like fractions:
150/90 - 180/90 = 150 - 180/90 = -30/90 - After reducing the fraction, the answer is -1/3
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