Add 28/30 and 2/90
28/30 + 2/90 is 43/45.
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,
2/90 = 2 × 1/90 × 1 = 2/90 - Add the two like fractions:
84/90 + 2/90 = 84 + 2/90 = 86/90 - 86/90 simplified gives 43/45
- So, 28/30 + 2/90 = 43/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30+2/90 28/30+4/90 28/60+2/90 84/30+2/90 28/30+6/90 28/90+2/90 28/30+10/90 28/30+14/90