Subtract 40/16 from 20/18
1st number: 1 2/18, 2nd number: 2 8/16
20/18 - 40/16 is -25/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 18 × 8 = 144,
20/18 = 20 × 8/18 × 8 = 160/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
40/16 = 40 × 9/16 × 9 = 360/144 - Subtract the two like fractions:
160/144 - 360/144 = 160 - 360/144 = -200/144 - After reducing the fraction, the answer is -25/18
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