Add 54/15 and 70/72
1st number: 3 9/15, 2nd number: 70/72
54/15 + 70/72 is 823/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 15 × 24 = 360,
54/15 = 54 × 24/15 × 24 = 1296/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
70/72 = 70 × 5/72 × 5 = 350/360 - Add the two like fractions:
1296/360 + 350/360 = 1296 + 350/360 = 1646/360 - 1646/360 simplified gives 823/180
- So, 54/15 + 70/72 = 823/180
In mixed form: 4103/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30+70/72 54/45+70/72 54/75+70/72