Add 90/2 and 20/80
1st number: 45 0/2, 2nd number: 20/80
90/2 + 20/80 is 181/4.
Steps for adding 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,
90/2 = 90 × 40/2 × 40 = 3600/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
20/80 = 20 × 1/80 × 1 = 20/80 - Add the two like fractions:
3600/80 + 20/80 = 3600 + 20/80 = 3620/80 - 3620/80 simplified gives 181/4
- So, 90/2 + 20/80 = 181/4
In mixed form: 451/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/2+40/80 90/4+20/80 90/2+60/80 90/6+20/80 90/10+20/80 90/14+20/80