Add 60/90 and 84/42
1st number: 60/90, 2nd number: 2 0/42
60/90 + 84/42 is 8/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
60/90 = 60 × 7/90 × 7 = 420/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
84/42 = 84 × 15/42 × 15 = 1260/630 - Add the two like fractions:
420/630 + 1260/630 = 420 + 1260/630 = 1680/630 - 1680/630 simplified gives 8/3
- So, 60/90 + 84/42 = 8/3
In mixed form: 22/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: