Add 84/9 and 70/72
1st number: 9 3/9, 2nd number: 70/72
84/9 + 70/72 is 371/36.
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,
84/9 = 84 × 8/9 × 8 = 672/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
70/72 = 70 × 1/72 × 1 = 70/72 - Add the two like fractions:
672/72 + 70/72 = 672 + 70/72 = 742/72 - 742/72 simplified gives 371/36
- So, 84/9 + 70/72 = 371/36
In mixed form: 1011/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+70/72 84/27+70/72 84/45+70/72 84/63+70/72