Add 25/42 and 4/30
25/42 + 4/30 is 51/70.
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,
4/30 = 4 × 7/30 × 7 = 28/210 - Add the two like fractions:
125/210 + 28/210 = 125 + 28/210 = 153/210 - 153/210 simplified gives 51/70
- So, 25/42 + 4/30 = 51/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42+4/30 25/42+8/30 25/84+4/30 25/42+4/60 75/42+4/30 25/42+12/30 25/42+4/90 25/42+20/30 25/42+28/30