Add 42/45 and 84/30
1st number: 42/45, 2nd number: 2 24/30
42/45 + 84/30 is 56/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
42/45 = 42 × 2/45 × 2 = 84/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
84/30 = 84 × 3/30 × 3 = 252/90 - Add the two like fractions:
84/90 + 252/90 = 84 + 252/90 = 336/90 - 336/90 simplified gives 56/15
- So, 42/45 + 84/30 = 56/15
In mixed form: 311/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45+84/30 42/90+84/30 42/45+84/60 42/45+84/90