Add 90/12 and 80/8
1st number: 7 6/12, 2nd number: 10 0/8
90/12 + 80/8 is 35/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 8 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 12 × 2 = 24,
90/12 = 90 × 2/12 × 2 = 180/24 - Likewise, for the 2nd fraction, since 8 × 3 = 24,
80/8 = 80 × 3/8 × 3 = 240/24 - Add the two like fractions:
180/24 + 240/24 = 180 + 240/24 = 420/24 - 420/24 simplified gives 35/2
- So, 90/12 + 80/8 = 35/2
In mixed form: 171/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/24+80/8 90/12+80/16 90/36+80/8 90/12+80/24 90/60+80/8 90/12+80/40 90/84+80/8 90/12+80/56