Subtract 10/15 from 40/90
40/90 - 10/15 is -2/9.
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,
40/90 = 40 × 1/90 × 1 = 40/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
10/15 = 10 × 6/15 × 6 = 60/90 - Subtract the two like fractions:
40/90 - 60/90 = 40 - 60/90 = -20/90 - After reducing the fraction, the answer is -2/9
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