Subtract 40/80 from 20/36
20/36 - 40/80 is 1/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 36 × 20 = 720,
20/36 = 20 × 20/36 × 20 = 400/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
40/80 = 40 × 9/80 × 9 = 360/720 - Subtract the two like fractions:
400/720 - 360/720 = 400 - 360/720 = 40/720 - After reducing the fraction, the answer is 1/18
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