Subtract 18/25 from 4/90
4/90 - 18/25 is -152/225.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 25 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
4/90 = 4 × 5/90 × 5 = 20/450 - Likewise, for the 2nd fraction, since 25 × 18 = 450,
18/25 = 18 × 18/25 × 18 = 324/450 - Subtract the two like fractions:
20/450 - 324/450 = 20 - 324/450 = -304/450 - After reducing the fraction, the answer is -152/225
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