Add 30/8 and 90/84
1st number: 3 6/8, 2nd number: 1 6/84
30/8 + 90/84 is 135/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 84 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
30/8 = 30 × 21/8 × 21 = 630/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
90/84 = 90 × 2/84 × 2 = 180/168 - Add the two like fractions:
630/168 + 180/168 = 630 + 180/168 = 810/168 - 810/168 simplified gives 135/28
- So, 30/8 + 90/84 = 135/28
In mixed form: 423/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/8+90/84 30/16+90/84 90/8+90/84 30/24+90/84 30/40+90/84 30/56+90/84