Add 3/42 and 80/30
1st number: 3/42, 2nd number: 2 20/30
3/42 + 80/30 is 115/42.
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,
3/42 = 3 × 5/42 × 5 = 15/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
80/30 = 80 × 7/30 × 7 = 560/210 - Add the two like fractions:
15/210 + 560/210 = 15 + 560/210 = 575/210 - 575/210 simplified gives 115/42
- So, 3/42 + 80/30 = 115/42
In mixed form: 231/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/42+80/30 3/84+80/30 3/42+80/60 9/42+80/30 3/42+80/90 15/42+80/30 21/42+80/30