Subtract 28/30 from 3/12
3/12 - 28/30 is -41/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
3/12 = 3 × 5/12 × 5 = 15/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
28/30 = 28 × 2/30 × 2 = 56/60 - Subtract the two like fractions:
15/60 - 56/60 = 15 - 56/60 = -41/60
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