Subtract 32/20 from 7/18
1st number: 7/18, 2nd number: 1 12/20
7/18 - 32/20 is -109/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
7/18 = 7 × 10/18 × 10 = 70/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
32/20 = 32 × 9/20 × 9 = 288/180 - Subtract the two like fractions:
70/180 - 288/180 = 70 - 288/180 = -218/180 - After reducing the fraction, the answer is -109/90
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