Add 84/90 and 28/54
84/90 + 28/54 is 196/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
84/90 = 84 × 3/90 × 3 = 252/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
28/54 = 28 × 5/54 × 5 = 140/270 - Add the two like fractions:
252/270 + 140/270 = 252 + 140/270 = 392/270 - 392/270 simplified gives 196/135
- So, 84/90 + 28/54 = 196/135
In mixed form: 161/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/90+56/54 84/90+84/54