Subtract 81/90 from 9/35
9/35 - 81/90 is -9/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 35 × 18 = 630,
9/35 = 9 × 18/35 × 18 = 162/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
81/90 = 81 × 7/90 × 7 = 567/630 - Subtract the two like fractions:
162/630 - 567/630 = 162 - 567/630 = -405/630 - After reducing the fraction, the answer is -9/14
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