Add 80/8 and 45/12
1st number: 10 0/8, 2nd number: 3 9/12
80/8 + 45/12 is 55/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 12 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 8 × 3 = 24,
80/8 = 80 × 3/8 × 3 = 240/24 - Likewise, for the 2nd fraction, since 12 × 2 = 24,
45/12 = 45 × 2/12 × 2 = 90/24 - Add the two like fractions:
240/24 + 90/24 = 240 + 90/24 = 330/24 - 330/24 simplified gives 55/4
- So, 80/8 + 45/12 = 55/4
In mixed form: 133/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/8+90/12 80/16+45/12 80/8+45/24 80/24+45/12 80/8+45/36 80/40+45/12 80/8+45/60 80/56+45/12 80/8+45/84