Subtract 70/20 from 18/25
1st number: 18/25, 2nd number: 3 10/20
18/25 - 70/20 is -139/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 20 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 25 × 4 = 100,
18/25 = 18 × 4/25 × 4 = 72/100 - Likewise, for the 2nd fraction, since 20 × 5 = 100,
70/20 = 70 × 5/20 × 5 = 350/100 - Subtract the two like fractions:
72/100 - 350/100 = 72 - 350/100 = -278/100 - After reducing the fraction, the answer is -139/50
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