Add 84/18 and 8/30
1st number: 4 12/18, 2nd number: 8/30
84/18 + 8/30 is 74/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
84/18 = 84 × 5/18 × 5 = 420/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
8/30 = 8 × 3/30 × 3 = 24/90 - Add the two like fractions:
420/90 + 24/90 = 420 + 24/90 = 444/90 - 444/90 simplified gives 74/15
- So, 84/18 + 8/30 = 74/15
In mixed form: 414/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+16/30 84/36+8/30 84/18+8/60 84/18+24/30 84/54+8/30 84/18+8/90 84/18+40/30 84/90+8/30 84/18+56/30