Add 54/56 and 9/12
54/56 + 9/12 is 12/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 12 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
54/56 = 54 × 3/56 × 3 = 162/168 - Likewise, for the 2nd fraction, since 12 × 14 = 168,
9/12 = 9 × 14/12 × 14 = 126/168 - Add the two like fractions:
162/168 + 126/168 = 162 + 126/168 = 288/168 - 288/168 simplified gives 12/7
- So, 54/56 + 9/12 = 12/7
In mixed form: 15/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/56+18/12 54/56+9/24 54/56+27/12 54/56+9/36 54/56+45/12 54/56+9/60 54/56+63/12 54/56+9/84