Add 30/45 and 12/80
30/45 + 12/80 is 49/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
30/45 = 30 × 16/45 × 16 = 480/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
12/80 = 12 × 9/80 × 9 = 108/720 - Add the two like fractions:
480/720 + 108/720 = 480 + 108/720 = 588/720 - 588/720 simplified gives 49/60
- So, 30/45 + 12/80 = 49/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/45+12/80 30/45+24/80 30/90+12/80 90/45+12/80 30/45+36/80 30/45+60/80 30/45+84/80