Subtract 40/54 from 45/90
45/90 - 40/54 is -13/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
45/90 = 45 × 3/90 × 3 = 135/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
40/54 = 40 × 5/54 × 5 = 200/270 - Subtract the two like fractions:
135/270 - 200/270 = 135 - 200/270 = -65/270 - After reducing the fraction, the answer is -13/54
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