Subtract 3/90 from 28/12
1st number: 2 4/12, 2nd number: 3/90
28/12 - 3/90 is 23/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
28/12 = 28 × 15/12 × 15 = 420/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
3/90 = 3 × 2/90 × 2 = 6/180 - Subtract the two like fractions:
420/180 - 6/180 = 420 - 6/180 = 414/180 - After reducing the fraction, the answer is 23/10
- In mixed form: 23/10
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