Subtract 40/90 from 10/45
10/45 - 40/90 is -2/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
10/45 = 10 × 2/45 × 2 = 20/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
40/90 = 40 × 1/90 × 1 = 40/90 - Subtract the two like fractions:
20/90 - 40/90 = 20 - 40/90 = -20/90 - After reducing the fraction, the answer is -2/9
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