Subtract 18/49 from 81/20
1st number: 4 1/20, 2nd number: 18/49
81/20 - 18/49 is 3609/980.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 49 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
81/20 = 81 × 49/20 × 49 = 3969/980 - Likewise, for the 2nd fraction, since 49 × 20 = 980,
18/49 = 18 × 20/49 × 20 = 360/980 - Subtract the two like fractions:
3969/980 - 360/980 = 3969 - 360/980 = 3609/980 - In mixed form: 3669/980
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