Subtract 81/90 from 16/36
16/36 - 81/90 is -41/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
16/36 = 16 × 5/36 × 5 = 80/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
81/90 = 81 × 2/90 × 2 = 162/180 - Subtract the two like fractions:
80/180 - 162/180 = 80 - 162/180 = -82/180 - After reducing the fraction, the answer is -41/90
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