Add 25/42 and 20/30
25/42 + 20/30 is 53/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
25/42 = 25 × 5/42 × 5 = 125/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
20/30 = 20 × 7/30 × 7 = 140/210 - Add the two like fractions:
125/210 + 140/210 = 125 + 140/210 = 265/210 - 265/210 simplified gives 53/42
- So, 25/42 + 20/30 = 53/42
In mixed form: 111/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42+20/30 25/42+40/30 25/84+20/30 25/42+20/60 75/42+20/30 25/42+60/30 25/42+20/90