Subtract 4/20 from 27/7
1st number: 3 6/7, 2nd number: 4/20
27/7 - 4/20 is 128/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 7 × 20 = 140,
27/7 = 27 × 20/7 × 20 = 540/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
4/20 = 4 × 7/20 × 7 = 28/140 - Subtract the two like fractions:
540/140 - 28/140 = 540 - 28/140 = 512/140 - After reducing the fraction, the answer is 128/35
- In mixed form: 323/35
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