Subtract 20/7 from 30/2
1st number: 15 0/2, 2nd number: 2 6/7
30/2 - 20/7 is 85/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 7 is 14
Next, find the equivalent fraction of both fractional numbers with denominator 14 - For the 1st fraction, since 2 × 7 = 14,
30/2 = 30 × 7/2 × 7 = 210/14 - Likewise, for the 2nd fraction, since 7 × 2 = 14,
20/7 = 20 × 2/7 × 2 = 40/14 - Subtract the two like fractions:
210/14 - 40/14 = 210 - 40/14 = 170/14 - After reducing the fraction, the answer is 85/7
- In mixed form: 121/7
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