Add 42/56 and 54/84
42/56 + 54/84 is 39/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 84 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
42/56 = 42 × 3/56 × 3 = 126/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
54/84 = 54 × 2/84 × 2 = 108/168 - Add the two like fractions:
126/168 + 108/168 = 126 + 108/168 = 234/168 - 234/168 simplified gives 39/28
- So, 42/56 + 54/84 = 39/28
In mixed form: 111/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56+54/84