Subtract 49/18 from 18/40
1st number: 18/40, 2nd number: 2 13/18
18/40 - 49/18 is -409/180.
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,
18/40 = 18 × 9/40 × 9 = 162/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
49/18 = 49 × 20/18 × 20 = 980/360 - Subtract the two like fractions:
162/360 - 980/360 = 162 - 980/360 = -818/360 - After reducing the fraction, the answer is -409/180
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