Subtract 28/30 from 3/18
3/18 - 28/30 is -23/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
3/18 = 3 × 5/18 × 5 = 15/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
28/30 = 28 × 3/30 × 3 = 84/90 - Subtract the two like fractions:
15/90 - 84/90 = 15 - 84/90 = -69/90 - After reducing the fraction, the answer is -23/30
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