Add 18/45 and 42/50
18/45 + 42/50 is 31/25.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 45 × 10 = 450,
18/45 = 18 × 10/45 × 10 = 180/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
42/50 = 42 × 9/50 × 9 = 378/450 - Add the two like fractions:
180/450 + 378/450 = 180 + 378/450 = 558/450 - 558/450 simplified gives 31/25
- So, 18/45 + 42/50 = 31/25
In mixed form: 16/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/45+42/50 18/45+84/50 18/90+42/50 54/45+42/50 90/45+42/50