Add 45/9 and 42/4
1st number: 5 0/9, 2nd number: 10 2/4
45/9 + 42/4 is 31/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
45/9 = 45 × 4/9 × 4 = 180/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
42/4 = 42 × 9/4 × 9 = 378/36 - Add the two like fractions:
180/36 + 378/36 = 180 + 378/36 = 558/36 - 558/36 simplified gives 31/2
- So, 45/9 + 42/4 = 31/2
In mixed form: 151/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/9+42/4 45/9+84/4 45/18+42/4 45/9+42/8 45/27+42/4 45/9+42/12 45/9+42/20 45/63+42/4 45/9+42/28