Add 12/80 and 90/8
1st number: 12/80, 2nd number: 11 2/8
12/80 + 90/8 is 57/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 8 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
12/80 = 12 × 1/80 × 1 = 12/80 - Likewise, for the 2nd fraction, since 8 × 10 = 80,
90/8 = 90 × 10/8 × 10 = 900/80 - Add the two like fractions:
12/80 + 900/80 = 12 + 900/80 = 912/80 - 912/80 simplified gives 57/5
- So, 12/80 + 90/8 = 57/5
In mixed form: 112/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/80+90/8 12/80+90/16 36/80+90/8 12/80+90/24 60/80+90/8 12/80+90/40 84/80+90/8 12/80+90/56