Subtract 70/20 from 20/9
1st number: 2 2/9, 2nd number: 3 10/20
20/9 - 70/20 is -23/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 9 × 20 = 180,
20/9 = 20 × 20/9 × 20 = 400/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
70/20 = 70 × 9/20 × 9 = 630/180 - Subtract the two like fractions:
400/180 - 630/180 = 400 - 630/180 = -230/180 - After reducing the fraction, the answer is -23/18
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