Add 12/9 and 70/72
1st number: 1 3/9, 2nd number: 70/72
12/9 + 70/72 is 83/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
12/9 = 12 × 8/9 × 8 = 96/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
70/72 = 70 × 1/72 × 1 = 70/72 - Add the two like fractions:
96/72 + 70/72 = 96 + 70/72 = 166/72 - 166/72 simplified gives 83/36
- So, 12/9 + 70/72 = 83/36
In mixed form: 211/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/9+70/72 12/18+70/72 36/9+70/72 12/27+70/72 60/9+70/72 12/45+70/72 84/9+70/72 12/63+70/72