Add 28/45 and 35/70
28/45 + 35/70 is 101/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
28/45 = 28 × 14/45 × 14 = 392/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
35/70 = 35 × 9/70 × 9 = 315/630 - Add the two like fractions:
392/630 + 315/630 = 392 + 315/630 = 707/630 - 707/630 simplified gives 101/90
- So, 28/45 + 35/70 = 101/90
In mixed form: 111/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/45+35/70 28/90+35/70 84/45+35/70