Add 72/56 and 15/70
1st number: 1 16/56, 2nd number: 15/70
72/56 + 15/70 is 3/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
72/56 = 72 × 5/56 × 5 = 360/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
15/70 = 15 × 4/70 × 4 = 60/280 - Add the two like fractions:
360/280 + 60/280 = 360 + 60/280 = 420/280 - 420/280 simplified gives 3/2
- So, 72/56 + 15/70 = 3/2
In mixed form: 11/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/56+30/70 72/56+45/70 72/56+75/70