Add 54/84 and 28/45
54/84 + 28/45 is 797/630.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
54/84 = 54 × 15/84 × 15 = 810/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
28/45 = 28 × 28/45 × 28 = 784/1260 - Add the two like fractions:
810/1260 + 784/1260 = 810 + 784/1260 = 1594/1260 - 1594/1260 simplified gives 797/630
- So, 54/84 + 28/45 = 797/630
In mixed form: 1167/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/84+56/45 54/84+28/90 54/84+84/45