Subtract 20/90 from 70/30
1st number: 2 10/30, 2nd number: 20/90
70/30 - 20/90 is 19/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
70/30 = 70 × 3/30 × 3 = 210/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
20/90 = 20 × 1/90 × 1 = 20/90 - Subtract the two like fractions:
210/90 - 20/90 = 210 - 20/90 = 190/90 - After reducing the fraction, the answer is 19/9
- In mixed form: 21/9
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