Add 2/7 and 28/90
2/7 + 28/90 is 188/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
2/7 = 2 × 90/7 × 90 = 180/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
28/90 = 28 × 7/90 × 7 = 196/630 - Add the two like fractions:
180/630 + 196/630 = 180 + 196/630 = 376/630 - 376/630 simplified gives 188/315
- So, 2/7 + 28/90 = 188/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/7+28/90 2/7+56/90 2/14+28/90 6/7+28/90 2/7+84/90 2/21+28/90 10/7+28/90 2/35+28/90 14/7+28/90 2/49+28/90