Subtract 20/5 from 45/70
1st number: 45/70, 2nd number: 4 0/5
45/70 - 20/5 is -47/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 5 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
45/70 = 45 × 1/70 × 1 = 45/70 - Likewise, for the 2nd fraction, since 5 × 14 = 70,
20/5 = 20 × 14/5 × 14 = 280/70 - Subtract the two like fractions:
45/70 - 280/70 = 45 - 280/70 = -235/70 - After reducing the fraction, the answer is -47/14
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