Add 42/7 and 28/30
1st number: 6 0/7, 2nd number: 28/30
42/7 + 28/30 is 104/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 7 × 30 = 210,
42/7 = 42 × 30/7 × 30 = 1260/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
28/30 = 28 × 7/30 × 7 = 196/210 - Add the two like fractions:
1260/210 + 196/210 = 1260 + 196/210 = 1456/210 - 1456/210 simplified gives 104/15
- So, 42/7 + 28/30 = 104/15
In mixed form: 614/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/7+28/30 42/7+56/30 42/14+28/30 42/7+28/60 42/7+84/30 42/21+28/30 42/7+28/90 42/35+28/30 42/49+28/30