Subtract 28/12 from 30/90
1st number: 30/90, 2nd number: 2 4/12
30/90 - 28/12 is -2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
30/90 = 30 × 2/90 × 2 = 60/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
28/12 = 28 × 15/12 × 15 = 420/180 - Subtract the two like fractions:
60/180 - 420/180 = 60 - 420/180 = -360/180 - After reducing the fraction, the answer is -2/1
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