Add 27/21 and 10/80
1st number: 1 6/21, 2nd number: 10/80
27/21 + 10/80 is 79/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
27/21 = 27 × 80/21 × 80 = 2160/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
10/80 = 10 × 21/80 × 21 = 210/1680 - Add the two like fractions:
2160/1680 + 210/1680 = 2160 + 210/1680 = 2370/1680 - 2370/1680 simplified gives 79/56
- So, 27/21 + 10/80 = 79/56
In mixed form: 123/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21+10/80 27/21+20/80 27/42+10/80 81/21+10/80 27/21+30/80 27/63+10/80 27/21+50/80 27/21+70/80