Add 54/56 and 12/80
54/56 + 12/80 is 39/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 56 × 10 = 560,
54/56 = 54 × 10/56 × 10 = 540/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
12/80 = 12 × 7/80 × 7 = 84/560 - Add the two like fractions:
540/560 + 84/560 = 540 + 84/560 = 624/560 - 624/560 simplified gives 39/35
- So, 54/56 + 12/80 = 39/35
In mixed form: 14/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/56+24/80 54/56+36/80 54/56+60/80 54/56+84/80