Add 18/2 and 30/42
1st number: 9 0/2, 2nd number: 30/42
18/2 + 30/42 is 68/7.
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,
18/2 = 18 × 21/2 × 21 = 378/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
30/42 = 30 × 1/42 × 1 = 30/42 - Add the two like fractions:
378/42 + 30/42 = 378 + 30/42 = 408/42 - 408/42 simplified gives 68/7
- So, 18/2 + 30/42 = 68/7
In mixed form: 95/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/2+30/42 18/2+60/42 18/4+30/42 18/2+30/84 54/2+30/42 18/2+90/42 18/6+30/42 90/2+30/42 18/10+30/42 18/14+30/42