Add 12/7 and 70/9
1st number: 1 5/7, 2nd number: 7 7/9
12/7 + 70/9 is 598/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
12/7 = 12 × 9/7 × 9 = 108/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
70/9 = 70 × 7/9 × 7 = 490/63 - Add the two like fractions:
108/63 + 490/63 = 108 + 490/63 = 598/63 - So, 12/7 + 70/9 = 598/63
In mixed form: 931/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/7+70/9 12/14+70/9 12/7+70/18 36/7+70/9 12/21+70/9 12/7+70/27 60/7+70/9 12/35+70/9 12/7+70/45 84/7+70/9 12/49+70/9 12/7+70/63