Add 42/50 and 54/45
1st number: 42/50, 2nd number: 1 9/45
42/50 + 54/45 is 51/25.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 45 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
42/50 = 42 × 9/50 × 9 = 378/450 - Likewise, for the 2nd fraction, since 45 × 10 = 450,
54/45 = 54 × 10/45 × 10 = 540/450 - Add the two like fractions:
378/450 + 540/450 = 378 + 540/450 = 918/450 - 918/450 simplified gives 51/25
- So, 42/50 + 54/45 = 51/25
In mixed form: 21/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/50+54/45 42/50+54/90