Add 30/90 and 2/80
30/90 + 2/80 is 43/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
30/90 = 30 × 8/90 × 8 = 240/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
2/80 = 2 × 9/80 × 9 = 18/720 - Add the two like fractions:
240/720 + 18/720 = 240 + 18/720 = 258/720 - 258/720 simplified gives 43/120
- So, 30/90 + 2/80 = 43/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/90+2/80 30/90+4/80 30/90+6/80 30/90+10/80 30/90+14/80