Add 7/10 and 28/90
7/10 + 28/90 is 91/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
7/10 = 7 × 9/10 × 9 = 63/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
28/90 = 28 × 1/90 × 1 = 28/90 - Add the two like fractions:
63/90 + 28/90 = 63 + 28/90 = 91/90 - So, 7/10 + 28/90 = 91/90
In mixed form: 11/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/10+28/90 7/10+56/90 7/20+28/90 21/10+28/90 7/10+84/90 7/30+28/90 35/10+28/90 7/50+28/90 49/10+28/90 7/70+28/90