Add 28/4 and 30/7
1st number: 7 0/4, 2nd number: 4 2/7
28/4 + 30/7 is 79/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
28/4 = 28 × 7/4 × 7 = 196/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
30/7 = 30 × 4/7 × 4 = 120/28 - Add the two like fractions:
196/28 + 120/28 = 196 + 120/28 = 316/28 - 316/28 simplified gives 79/7
- So, 28/4 + 30/7 = 79/7
In mixed form: 112/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/4+30/7 28/4+60/7 28/8+30/7 28/4+30/14 84/4+30/7 28/4+90/7 28/12+30/7 28/4+30/21 28/20+30/7 28/4+30/35 28/4+30/49