Subtract 20/45 from 70/15
1st number: 4 10/15, 2nd number: 20/45
70/15 - 20/45 is 38/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
70/15 = 70 × 3/15 × 3 = 210/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
20/45 = 20 × 1/45 × 1 = 20/45 - Subtract the two like fractions:
210/45 - 20/45 = 210 - 20/45 = 190/45 - After reducing the fraction, the answer is 38/9
- In mixed form: 42/9
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