Add 10/72 and 70/40
1st number: 10/72, 2nd number: 1 30/40
10/72 + 70/40 is 17/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
10/72 = 10 × 5/72 × 5 = 50/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
70/40 = 70 × 9/40 × 9 = 630/360 - Add the two like fractions:
50/360 + 630/360 = 50 + 630/360 = 680/360 - 680/360 simplified gives 17/9
- So, 10/72 + 70/40 = 17/9
In mixed form: 18/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/72+70/40 10/72+70/80 30/72+70/40 50/72+70/40 70/72+70/40