Add 9/4 and 54/18
1st number: 2 1/4, 2nd number: 3 0/18
9/4 + 54/18 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
9/4 = 9 × 9/4 × 9 = 81/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
54/18 = 54 × 2/18 × 2 = 108/36 - Add the two like fractions:
81/36 + 108/36 = 81 + 108/36 = 189/36 - 189/36 simplified gives 21/4
- So, 9/4 + 54/18 = 21/4
In mixed form: 51/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/4+54/18 9/8+54/18 9/4+54/36 27/4+54/18 9/12+54/18 45/4+54/18 9/20+54/18 9/4+54/90 63/4+54/18 9/28+54/18