Add 25/30 and 20/40
25/30 + 20/40 is 4/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
25/30 = 25 × 4/30 × 4 = 100/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
20/40 = 20 × 3/40 × 3 = 60/120 - Add the two like fractions:
100/120 + 60/120 = 100 + 60/120 = 160/120 - 160/120 simplified gives 4/3
- So, 25/30 + 20/40 = 4/3
In mixed form: 11/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/30+20/40 25/60+20/40 25/30+20/80 75/30+20/40 25/30+60/40 25/90+20/40