Add 42/90 and 42/50
42/90 + 42/50 is 98/75.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
42/90 = 42 × 5/90 × 5 = 210/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
42/50 = 42 × 9/50 × 9 = 378/450 - Add the two like fractions:
210/450 + 378/450 = 210 + 378/450 = 588/450 - 588/450 simplified gives 98/75
- So, 42/90 + 42/50 = 98/75
In mixed form: 123/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/90+42/50 42/90+84/50