Subtract 6/15 from 15/90
15/90 - 6/15 is -7/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
15/90 = 15 × 1/90 × 1 = 15/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
6/15 = 6 × 6/15 × 6 = 36/90 - Subtract the two like fractions:
15/90 - 36/90 = 15 - 36/90 = -21/90 - After reducing the fraction, the answer is -7/30
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