Add 12/20 and 7/80
12/20 + 7/80 is 11/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
12/20 = 12 × 4/20 × 4 = 48/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
7/80 = 7 × 1/80 × 1 = 7/80 - Add the two like fractions:
48/80 + 7/80 = 48 + 7/80 = 55/80 - 55/80 simplified gives 11/16
- So, 12/20 + 7/80 = 11/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/20+7/80 12/20+14/80 12/40+7/80 36/20+7/80 12/20+21/80 12/60+7/80 60/20+7/80 12/20+35/80 84/20+7/80 12/20+49/80