Add 40/30 and 84/90
1st number: 1 10/30, 2nd number: 84/90
40/30 + 84/90 is 34/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
40/30 = 40 × 3/30 × 3 = 120/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
84/90 = 84 × 1/90 × 1 = 84/90 - Add the two like fractions:
120/90 + 84/90 = 120 + 84/90 = 204/90 - 204/90 simplified gives 34/15
- So, 40/30 + 84/90 = 34/15
In mixed form: 24/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/30+84/90 40/60+84/90 40/90+84/90