Subtract 40/18 from 18/28
1st number: 18/28, 2nd number: 2 4/18
18/28 - 40/18 is -199/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
18/28 = 18 × 9/28 × 9 = 162/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
40/18 = 40 × 14/18 × 14 = 560/252 - Subtract the two like fractions:
162/252 - 560/252 = 162 - 560/252 = -398/252 - After reducing the fraction, the answer is -199/126
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