Add 54/12 and 80/70
1st number: 4 6/12, 2nd number: 1 10/70
54/12 + 80/70 is 79/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
54/12 = 54 × 35/12 × 35 = 1890/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
80/70 = 80 × 6/70 × 6 = 480/420 - Add the two like fractions:
1890/420 + 480/420 = 1890 + 480/420 = 2370/420 - 2370/420 simplified gives 79/14
- So, 54/12 + 80/70 = 79/14
In mixed form: 59/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/24+80/70 54/36+80/70 54/60+80/70 54/84+80/70