Add 4/12 and 30/80
4/12 + 30/80 is 17/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 12 × 20 = 240,
4/12 = 4 × 20/12 × 20 = 80/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
30/80 = 30 × 3/80 × 3 = 90/240 - Add the two like fractions:
80/240 + 90/240 = 80 + 90/240 = 170/240 - 170/240 simplified gives 17/24
- So, 4/12 + 30/80 = 17/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/12+30/80 4/12+60/80 4/24+30/80 4/12+90/80 4/36+30/80 20/12+30/80 4/60+30/80 28/12+30/80 4/84+30/80