Add 30/90 and 48/80
30/90 + 48/80 is 14/15.
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,
48/80 = 48 × 9/80 × 9 = 432/720 - Add the two like fractions:
240/720 + 432/720 = 240 + 432/720 = 672/720 - 672/720 simplified gives 14/15
- So, 30/90 + 48/80 = 14/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/90+48/80 30/90+96/80