Add 12/28 and 40/10
1st number: 12/28, 2nd number: 4 0/10
12/28 + 40/10 is 31/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 10 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
12/28 = 12 × 5/28 × 5 = 60/140 - Likewise, for the 2nd fraction, since 10 × 14 = 140,
40/10 = 40 × 14/10 × 14 = 560/140 - Add the two like fractions:
60/140 + 560/140 = 60 + 560/140 = 620/140 - 620/140 simplified gives 31/7
- So, 12/28 + 40/10 = 31/7
In mixed form: 43/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/28+40/10 12/28+80/10 12/56+40/10 12/28+40/20 36/28+40/10 12/84+40/10 12/28+40/30 60/28+40/10 12/28+40/50 84/28+40/10 12/28+40/70