Subtract 81/50 from 70/20
1st number: 3 10/20, 2nd number: 1 31/50
70/20 - 81/50 is 47/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 50 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
70/20 = 70 × 5/20 × 5 = 350/100 - Likewise, for the 2nd fraction, since 50 × 2 = 100,
81/50 = 81 × 2/50 × 2 = 162/100 - Subtract the two like fractions:
350/100 - 162/100 = 350 - 162/100 = 188/100 - After reducing the fraction, the answer is 47/25
- In mixed form: 122/25
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