Add 42/36 and 5/20
1st number: 1 6/36, 2nd number: 5/20
42/36 + 5/20 is 17/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
42/36 = 42 × 5/36 × 5 = 210/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
5/20 = 5 × 9/20 × 9 = 45/180 - Add the two like fractions:
210/180 + 45/180 = 210 + 45/180 = 255/180 - 255/180 simplified gives 17/12
- So, 42/36 + 5/20 = 17/12
In mixed form: 15/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/36+5/20 42/36+10/20 42/72+5/20 42/36+5/40 42/36+15/20 42/36+5/60 42/36+25/20 42/36+35/20