Subtract 20/45 from 75/7
1st number: 10 5/7, 2nd number: 20/45
75/7 - 20/45 is 647/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 7 × 45 = 315,
75/7 = 75 × 45/7 × 45 = 3375/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
20/45 = 20 × 7/45 × 7 = 140/315 - Subtract the two like fractions:
3375/315 - 140/315 = 3375 - 140/315 = 3235/315 - After reducing the fraction, the answer is 647/63
- In mixed form: 1017/63
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