Add 28/35 and 12/18
28/35 + 12/18 is 22/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 35 × 18 = 630,
28/35 = 28 × 18/35 × 18 = 504/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
12/18 = 12 × 35/18 × 35 = 420/630 - Add the two like fractions:
504/630 + 420/630 = 504 + 420/630 = 924/630 - 924/630 simplified gives 22/15
- So, 28/35 + 12/18 = 22/15
In mixed form: 17/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/35+12/18 28/35+24/18 28/70+12/18 28/35+12/36 84/35+12/18 28/35+36/18 28/35+12/54 28/35+60/18 28/35+12/90 28/35+84/18