Subtract 40/35 from 90/81
1st number: 1 9/81, 2nd number: 1 5/35
90/81 - 40/35 is -2/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 35 is 2835
Next, find the equivalent fraction of both fractional numbers with denominator 2835 - For the 1st fraction, since 81 × 35 = 2835,
90/81 = 90 × 35/81 × 35 = 3150/2835 - Likewise, for the 2nd fraction, since 35 × 81 = 2835,
40/35 = 40 × 81/35 × 81 = 3240/2835 - Subtract the two like fractions:
3150/2835 - 3240/2835 = 3150 - 3240/2835 = -90/2835 - After reducing the fraction, the answer is -2/63
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