Subtract 80/49 from 40/81
1st number: 40/81, 2nd number: 1 31/49
40/81 - 80/49 is -4520/3969.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 49 is 3969
Next, find the equivalent fraction of both fractional numbers with denominator 3969 - For the 1st fraction, since 81 × 49 = 3969,
40/81 = 40 × 49/81 × 49 = 1960/3969 - Likewise, for the 2nd fraction, since 49 × 81 = 3969,
80/49 = 80 × 81/49 × 81 = 6480/3969 - Subtract the two like fractions:
1960/3969 - 6480/3969 = 1960 - 6480/3969 = -4520/3969
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