Add 90/80 and 12/16
1st number: 1 10/80, 2nd number: 12/16
90/80 + 12/16 is 15/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
90/80 = 90 × 1/80 × 1 = 90/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
12/16 = 12 × 5/16 × 5 = 60/80 - Add the two like fractions:
90/80 + 60/80 = 90 + 60/80 = 150/80 - 150/80 simplified gives 15/8
- So, 90/80 + 12/16 = 15/8
In mixed form: 17/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80+24/16 90/80+12/32 90/80+36/16 90/80+12/48 90/80+60/16 90/80+12/80 90/80+84/16