Subtract 4/7 from 75/20
1st number: 3 15/20, 2nd number: 4/7
75/20 - 4/7 is 89/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
75/20 = 75 × 7/20 × 7 = 525/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
4/7 = 4 × 20/7 × 20 = 80/140 - Subtract the two like fractions:
525/140 - 80/140 = 525 - 80/140 = 445/140 - After reducing the fraction, the answer is 89/28
- In mixed form: 35/28
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