Add 30/80 and 20/7
1st number: 30/80, 2nd number: 2 6/7
30/80 + 20/7 is 181/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 7 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
30/80 = 30 × 7/80 × 7 = 210/560 - Likewise, for the 2nd fraction, since 7 × 80 = 560,
20/7 = 20 × 80/7 × 80 = 1600/560 - Add the two like fractions:
210/560 + 1600/560 = 210 + 1600/560 = 1810/560 - 1810/560 simplified gives 181/56
- So, 30/80 + 20/7 = 181/56
In mixed form: 313/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/80+20/7 30/80+40/7 30/80+20/14 90/80+20/7 30/80+60/7 30/80+20/21 30/80+20/35 30/80+20/49