Add 80/42 and 5/30
1st number: 1 38/42, 2nd number: 5/30
80/42 + 5/30 is 29/14.
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,
80/42 = 80 × 5/42 × 5 = 400/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
5/30 = 5 × 7/30 × 7 = 35/210 - Add the two like fractions:
400/210 + 35/210 = 400 + 35/210 = 435/210 - 435/210 simplified gives 29/14
- So, 80/42 + 5/30 = 29/14
In mixed form: 21/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/42+10/30 80/84+5/30 80/42+5/60 80/42+15/30 80/42+5/90 80/42+25/30 80/42+35/30