Subtract 20/7 from 27/45
1st number: 27/45, 2nd number: 2 6/7
27/45 - 20/7 is -79/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
27/45 = 27 × 7/45 × 7 = 189/315 - Likewise, for the 2nd fraction, since 7 × 45 = 315,
20/7 = 20 × 45/7 × 45 = 900/315 - Subtract the two like fractions:
189/315 - 900/315 = 189 - 900/315 = -711/315 - After reducing the fraction, the answer is -79/35
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