Add 40/12 and 28/84
1st number: 3 4/12, 2nd number: 28/84
40/12 + 28/84 is 11/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
40/12 = 40 × 7/12 × 7 = 280/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
28/84 = 28 × 1/84 × 1 = 28/84 - Add the two like fractions:
280/84 + 28/84 = 280 + 28/84 = 308/84 - 308/84 simplified gives 11/3
- So, 40/12 + 28/84 = 11/3
In mixed form: 32/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12+28/84 40/12+56/84 40/24+28/84 40/36+28/84 40/60+28/84 40/84+28/84