Add 28/30 and 36/7
1st number: 28/30, 2nd number: 5 1/7
28/30 + 36/7 is 638/105.
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,
28/30 = 28 × 7/30 × 7 = 196/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
36/7 = 36 × 30/7 × 30 = 1080/210 - Add the two like fractions:
196/210 + 1080/210 = 196 + 1080/210 = 1276/210 - 1276/210 simplified gives 638/105
- So, 28/30 + 36/7 = 638/105
In mixed form: 68/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30+36/7 28/30+72/7 28/60+36/7 28/30+36/14 84/30+36/7 28/90+36/7 28/30+36/21 28/30+36/35 28/30+36/49