Add 60/18 and 90/42
1st number: 3 6/18, 2nd number: 2 6/42
60/18 + 90/42 is 115/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
60/18 = 60 × 7/18 × 7 = 420/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
90/42 = 90 × 3/42 × 3 = 270/126 - Add the two like fractions:
420/126 + 270/126 = 420 + 270/126 = 690/126 - 690/126 simplified gives 115/21
- So, 60/18 + 90/42 = 115/21
In mixed form: 510/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/36+90/42 60/18+90/84 60/54+90/42 60/90+90/42