Add 25/40 and 20/28
25/40 + 20/28 is 75/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 28 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
25/40 = 25 × 7/40 × 7 = 175/280 - Likewise, for the 2nd fraction, since 28 × 10 = 280,
20/28 = 20 × 10/28 × 10 = 200/280 - Add the two like fractions:
175/280 + 200/280 = 175 + 200/280 = 375/280 - 375/280 simplified gives 75/56
- So, 25/40 + 20/28 = 75/56
In mixed form: 119/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/40+20/28 25/40+40/28 25/80+20/28 25/40+20/56 75/40+20/28 25/40+60/28 25/40+20/84