Subtract 30/36 from 20/7
1st number: 2 6/7, 2nd number: 30/36
20/7 - 30/36 is 85/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 7 × 36 = 252,
20/7 = 20 × 36/7 × 36 = 720/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
30/36 = 30 × 7/36 × 7 = 210/252 - Subtract the two like fractions:
720/252 - 210/252 = 720 - 210/252 = 510/252 - After reducing the fraction, the answer is 85/42
- In mixed form: 21/42
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