Add 40/28 and 25/20
1st number: 1 12/28, 2nd number: 1 5/20
40/28 + 25/20 is 75/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
40/28 = 40 × 5/28 × 5 = 200/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
25/20 = 25 × 7/20 × 7 = 175/140 - Add the two like fractions:
200/140 + 175/140 = 200 + 175/140 = 375/140 - 375/140 simplified gives 75/28
- So, 40/28 + 25/20 = 75/28
In mixed form: 219/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/28+25/20 40/28+50/20 40/56+25/20 40/28+25/40 40/28+75/20 40/84+25/20 40/28+25/60