Subtract 1/18 from 40/84
40/84 - 1/18 is 53/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
40/84 = 40 × 3/84 × 3 = 120/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
1/18 = 1 × 14/18 × 14 = 14/252 - Subtract the two like fractions:
120/252 - 14/252 = 120 - 14/252 = 106/252 - After reducing the fraction, the answer is 53/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/84-1/18 40/84-2/18 40/84-1/36 40/84-3/18 40/84-1/54 40/84-5/18 40/84-1/90 40/84-7/18