Add 72/20 and 15/49
1st number: 3 12/20, 2nd number: 15/49
72/20 + 15/49 is 957/245.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 49 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
72/20 = 72 × 49/20 × 49 = 3528/980 - Likewise, for the 2nd fraction, since 49 × 20 = 980,
15/49 = 15 × 20/49 × 20 = 300/980 - Add the two like fractions:
3528/980 + 300/980 = 3528 + 300/980 = 3828/980 - 3828/980 simplified gives 957/245
- So, 72/20 + 15/49 = 957/245
In mixed form: 3222/245
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/20+30/49 72/40+15/49 72/20+15/98 72/20+45/49 72/60+15/49 72/20+75/49