Add 27/30 and 28/7
1st number: 27/30, 2nd number: 4 0/7
27/30 + 28/7 is 49/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
27/30 = 27 × 7/30 × 7 = 189/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
28/7 = 28 × 30/7 × 30 = 840/210 - Add the two like fractions:
189/210 + 840/210 = 189 + 840/210 = 1029/210 - 1029/210 simplified gives 49/10
- So, 27/30 + 28/7 = 49/10
In mixed form: 49/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30+28/7 27/30+56/7 27/60+28/7 27/30+28/14 81/30+28/7 27/30+84/7 27/90+28/7 27/30+28/21 27/30+28/35 27/30+28/49