Add 84/30 and 80/42
1st number: 2 24/30, 2nd number: 1 38/42
84/30 + 80/42 is 494/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
84/30 = 84 × 7/30 × 7 = 588/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
80/42 = 80 × 5/42 × 5 = 400/210 - Add the two like fractions:
588/210 + 400/210 = 588 + 400/210 = 988/210 - 988/210 simplified gives 494/105
- So, 84/30 + 80/42 = 494/105
In mixed form: 474/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/60+80/42 84/30+80/84 84/90+80/42