Add 30/8 and 9/42
1st number: 3 6/8, 2nd number: 9/42
30/8 + 9/42 is 111/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 42 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 42 × 4 = 168,
9/42 = 9 × 4/42 × 4 = 36/168 - Add the two like fractions:
630/168 + 36/168 = 630 + 36/168 = 666/168 - 666/168 simplified gives 111/28
- So, 30/8 + 9/42 = 111/28
In mixed form: 327/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/8+9/42 30/8+18/42 30/16+9/42 30/8+9/84 90/8+9/42 30/8+27/42 30/24+9/42 30/8+45/42 30/40+9/42 30/8+63/42 30/56+9/42