Add 54/84 and 40/64
54/84 + 40/64 is 71/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 64 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 84 × 16 = 1344,
54/84 = 54 × 16/84 × 16 = 864/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
40/64 = 40 × 21/64 × 21 = 840/1344 - Add the two like fractions:
864/1344 + 840/1344 = 864 + 840/1344 = 1704/1344 - 1704/1344 simplified gives 71/56
- So, 54/84 + 40/64 = 71/56
In mixed form: 115/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/84+80/64