Add 36/20 and 15/42
1st number: 1 16/20, 2nd number: 15/42
36/20 + 15/42 is 151/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
36/20 = 36 × 21/20 × 21 = 756/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
15/42 = 15 × 10/42 × 10 = 150/420 - Add the two like fractions:
756/420 + 150/420 = 756 + 150/420 = 906/420 - 906/420 simplified gives 151/70
- So, 36/20 + 15/42 = 151/70
In mixed form: 211/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/20+15/42 36/20+30/42 36/40+15/42 36/20+15/84 36/20+45/42 36/60+15/42 36/20+75/42