Subtract 70/81 from 90/49
1st number: 1 41/49, 2nd number: 70/81
90/49 - 70/81 is 3860/3969.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 81 is 3969
Next, find the equivalent fraction of both fractional numbers with denominator 3969 - For the 1st fraction, since 49 × 81 = 3969,
90/49 = 90 × 81/49 × 81 = 7290/3969 - Likewise, for the 2nd fraction, since 81 × 49 = 3969,
70/81 = 70 × 49/81 × 49 = 3430/3969 - Subtract the two like fractions:
7290/3969 - 3430/3969 = 7290 - 3430/3969 = 3860/3969
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