Subtract 90/80 from 84/2
1st number: 42 0/2, 2nd number: 1 10/80
84/2 - 90/80 is 327/8.
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,
84/2 = 84 × 40/2 × 40 = 3360/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
90/80 = 90 × 1/80 × 1 = 90/80 - Subtract the two like fractions:
3360/80 - 90/80 = 3360 - 90/80 = 3270/80 - After reducing the fraction, the answer is 327/8
- In mixed form: 407/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4-90/80 84/6-90/80 84/10-90/80 84/14-90/80