Subtract 21/18 from 70/9
1st number: 7 7/9, 2nd number: 1 3/18
70/9 - 21/18 is 119/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 9 × 2 = 18,
70/9 = 70 × 2/9 × 2 = 140/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
21/18 = 21 × 1/18 × 1 = 21/18 - Subtract the two like fractions:
140/18 - 21/18 = 140 - 21/18 = 119/18 - In mixed form: 611/18
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