Subtract 75/20 from 45/7
1st number: 6 3/7, 2nd number: 3 15/20
45/7 - 75/20 is 75/28.
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,
45/7 = 45 × 20/7 × 20 = 900/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
75/20 = 75 × 7/20 × 7 = 525/140 - Subtract the two like fractions:
900/140 - 525/140 = 900 - 525/140 = 375/140 - After reducing the fraction, the answer is 75/28
- In mixed form: 219/28
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