Add 42/30 and 18/36
1st number: 1 12/30, 2nd number: 18/36
42/30 + 18/36 is 19/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 30 × 6 = 180,
42/30 = 42 × 6/30 × 6 = 252/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
18/36 = 18 × 5/36 × 5 = 90/180 - Add the two like fractions:
252/180 + 90/180 = 252 + 90/180 = 342/180 - 342/180 simplified gives 19/10
- So, 42/30 + 18/36 = 19/10
In mixed form: 19/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30+18/36 42/60+18/36 42/30+18/72 42/30+54/36 42/90+18/36 42/30+90/36