Subtract 80/18 from 20/40
1st number: 20/40, 2nd number: 4 8/18
20/40 - 80/18 is -71/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 18 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
20/40 = 20 × 9/40 × 9 = 180/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
80/18 = 80 × 20/18 × 20 = 1600/360 - Subtract the two like fractions:
180/360 - 1600/360 = 180 - 1600/360 = -1420/360 - After reducing the fraction, the answer is -71/18
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