Add 28/30 and 5/90
28/30 + 5/90 is 89/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
28/30 = 28 × 3/30 × 3 = 84/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
5/90 = 5 × 1/90 × 1 = 5/90 - Add the two like fractions:
84/90 + 5/90 = 84 + 5/90 = 89/90 - So, 28/30 + 5/90 = 89/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30+5/90 28/30+10/90 28/60+5/90 84/30+5/90 28/30+15/90 28/90+5/90 28/30+25/90 28/30+35/90