Add 40/12 and 4/28
1st number: 3 4/12, 2nd number: 4/28
40/12 + 4/28 is 73/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 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 28 × 3 = 84,
4/28 = 4 × 3/28 × 3 = 12/84 - Add the two like fractions:
280/84 + 12/84 = 280 + 12/84 = 292/84 - 292/84 simplified gives 73/21
- So, 40/12 + 4/28 = 73/21
In mixed form: 310/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12+4/28 40/12+8/28 40/24+4/28 40/12+4/56 40/12+12/28 40/36+4/28 40/12+4/84 40/12+20/28 40/60+4/28 40/84+4/28