Add 20/35 and 54/12
1st number: 20/35, 2nd number: 4 6/12
20/35 + 54/12 is 71/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 35 × 12 = 420,
20/35 = 20 × 12/35 × 12 = 240/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
54/12 = 54 × 35/12 × 35 = 1890/420 - Add the two like fractions:
240/420 + 1890/420 = 240 + 1890/420 = 2130/420 - 2130/420 simplified gives 71/14
- So, 20/35 + 54/12 = 71/14
In mixed form: 51/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/35+54/12 20/70+54/12 20/35+54/24 60/35+54/12 20/35+54/36 20/35+54/60 20/35+54/84