Subtract 7/20 from 18/49
18/49 - 7/20 is 17/980.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 20 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 49 × 20 = 980,
18/49 = 18 × 20/49 × 20 = 360/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
7/20 = 7 × 49/20 × 49 = 343/980 - Subtract the two like fractions:
360/980 - 343/980 = 360 - 343/980 = 17/980
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