Add 28/30 and 56/42
1st number: 28/30, 2nd number: 1 14/42
28/30 + 56/42 is 34/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
28/30 = 28 × 7/30 × 7 = 196/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
56/42 = 56 × 5/42 × 5 = 280/210 - Add the two like fractions:
196/210 + 280/210 = 196 + 280/210 = 476/210 - 476/210 simplified gives 34/15
- So, 28/30 + 56/42 = 34/15
In mixed form: 24/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30+56/42 28/60+56/42 28/30+56/84 84/30+56/42 28/90+56/42