Subtract 20/36 from 16/45
16/45 - 20/36 is -1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
16/45 = 16 × 4/45 × 4 = 64/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
20/36 = 20 × 5/36 × 5 = 100/180 - Subtract the two like fractions:
64/180 - 100/180 = 64 - 100/180 = -36/180 - After reducing the fraction, the answer is -1/5
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