Subtract 20/84 from 70/18
1st number: 3 16/18, 2nd number: 20/84
70/18 - 20/84 is 230/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
70/18 = 70 × 14/18 × 14 = 980/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
20/84 = 20 × 3/84 × 3 = 60/252 - Subtract the two like fractions:
980/252 - 60/252 = 980 - 60/252 = 920/252 - After reducing the fraction, the answer is 230/63
- In mixed form: 341/63
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