Subtract 40/90 from 4/25
4/25 - 40/90 is -64/225.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
4/25 = 4 × 18/25 × 18 = 72/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
40/90 = 40 × 5/90 × 5 = 200/450 - Subtract the two like fractions:
72/450 - 200/450 = 72 - 200/450 = -128/450 - After reducing the fraction, the answer is -64/225
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