Add 90/8 and 80/20
1st number: 11 2/8, 2nd number: 4 0/20
90/8 + 80/20 is 61/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
90/8 = 90 × 5/8 × 5 = 450/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
80/20 = 80 × 2/20 × 2 = 160/40 - Add the two like fractions:
450/40 + 160/40 = 450 + 160/40 = 610/40 - 610/40 simplified gives 61/4
- So, 90/8 + 80/20 = 61/4
In mixed form: 151/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/16+80/20 90/8+80/40 90/24+80/20 90/8+80/60 90/40+80/20 90/56+80/20