Subtract 28/20 from 70/18
1st number: 3 16/18, 2nd number: 1 8/20
70/18 - 28/20 is 112/45.
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,
70/18 = 70 × 10/18 × 10 = 700/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
28/20 = 28 × 9/20 × 9 = 252/180 - Subtract the two like fractions:
700/180 - 252/180 = 700 - 252/180 = 448/180 - After reducing the fraction, the answer is 112/45
- In mixed form: 222/45
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