Add 84/90 and 4/54
84/90 + 4/54 is 136/135.
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,
4/54 = 4 × 5/54 × 5 = 20/270 - Add the two like fractions:
252/270 + 20/270 = 252 + 20/270 = 272/270 - 272/270 simplified gives 136/135
- So, 84/90 + 4/54 = 136/135
In mixed form: 11/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/90+8/54 84/90+12/54 84/90+20/54 84/90+28/54