Subtract 20/25 from 45/70
45/70 - 20/25 is -11/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 25 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 70 × 5 = 350,
45/70 = 45 × 5/70 × 5 = 225/350 - Likewise, for the 2nd fraction, since 25 × 14 = 350,
20/25 = 20 × 14/25 × 14 = 280/350 - Subtract the two like fractions:
225/350 - 280/350 = 225 - 280/350 = -55/350 - After reducing the fraction, the answer is -11/70
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