Add 30/2 and 18/42
1st number: 15 0/2, 2nd number: 18/42
30/2 + 18/42 is 108/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
30/2 = 30 × 21/2 × 21 = 630/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
18/42 = 18 × 1/42 × 1 = 18/42 - Add the two like fractions:
630/42 + 18/42 = 630 + 18/42 = 648/42 - 648/42 simplified gives 108/7
- So, 30/2 + 18/42 = 108/7
In mixed form: 153/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/2+18/42 30/2+36/42 30/4+18/42 30/2+18/84 90/2+18/42 30/2+54/42 30/6+18/42 30/2+90/42 30/10+18/42 30/14+18/42