Subtract 84/80 from 18/2
1st number: 9 0/2, 2nd number: 1 4/80
18/2 - 84/80 is 159/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 2 × 40 = 80,
18/2 = 18 × 40/2 × 40 = 720/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
84/80 = 84 × 1/80 × 1 = 84/80 - Subtract the two like fractions:
720/80 - 84/80 = 720 - 84/80 = 636/80 - After reducing the fraction, the answer is 159/20
- In mixed form: 719/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/2-84/80 18/4-84/80 54/2-84/80 18/6-84/80 90/2-84/80 18/10-84/80 18/14-84/80