Add 6/12 and 42/80
6/12 + 42/80 is 41/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 12 × 20 = 240,
6/12 = 6 × 20/12 × 20 = 120/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
42/80 = 42 × 3/80 × 3 = 126/240 - Add the two like fractions:
120/240 + 126/240 = 120 + 126/240 = 246/240 - 246/240 simplified gives 41/40
- So, 6/12 + 42/80 = 41/40
In mixed form: 11/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12+84/80 6/24+42/80 18/12+42/80 6/36+42/80 30/12+42/80 6/60+42/80 42/12+42/80 6/84+42/80