Subtract 15/54 from 1/90
1/90 - 15/54 is -4/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
1/90 = 1 × 3/90 × 3 = 3/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
15/54 = 15 × 5/54 × 5 = 75/270 - Subtract the two like fractions:
3/270 - 75/270 = 3 - 75/270 = -72/270 - After reducing the fraction, the answer is -4/15
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