Add 54/21 and 50/80
1st number: 2 12/21, 2nd number: 50/80
54/21 + 50/80 is 179/56.
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,
54/21 = 54 × 80/21 × 80 = 4320/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
50/80 = 50 × 21/80 × 21 = 1050/1680 - Add the two like fractions:
4320/1680 + 1050/1680 = 4320 + 1050/1680 = 5370/1680 - 5370/1680 simplified gives 179/56
- So, 54/21 + 50/80 = 179/56
In mixed form: 311/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42+50/80 54/63+50/80