Add 28/25 and 42/90
1st number: 1 3/25, 2nd number: 42/90
28/25 + 42/90 is 119/75.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
28/25 = 28 × 18/25 × 18 = 504/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
42/90 = 42 × 5/90 × 5 = 210/450 - Add the two like fractions:
504/450 + 210/450 = 504 + 210/450 = 714/450 - 714/450 simplified gives 119/75
- So, 28/25 + 42/90 = 119/75
In mixed form: 144/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/25+42/90 28/25+84/90 28/50+42/90 84/25+42/90 28/75+42/90