Subtract 45/7 from 20/5
1st number: 4 0/5, 2nd number: 6 3/7
20/5 - 45/7 is -17/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 7 is 35
Next, find the equivalent fraction of both fractional numbers with denominator 35 - For the 1st fraction, since 5 × 7 = 35,
20/5 = 20 × 7/5 × 7 = 140/35 - Likewise, for the 2nd fraction, since 7 × 5 = 35,
45/7 = 45 × 5/7 × 5 = 225/35 - Subtract the two like fractions:
140/35 - 225/35 = 140 - 225/35 = -85/35 - After reducing the fraction, the answer is -17/7
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