Subtract 50/70 from 20/7
1st number: 2 6/7, 2nd number: 50/70
20/7 - 50/70 is 15/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
20/7 = 20 × 10/7 × 10 = 200/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
50/70 = 50 × 1/70 × 1 = 50/70 - Subtract the two like fractions:
200/70 - 50/70 = 200 - 50/70 = 150/70 - After reducing the fraction, the answer is 15/7
- In mixed form: 21/7
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