Add 84/7 and 45/9
1st number: 12 0/7, 2nd number: 5 0/9
84/7 + 45/9 is 17/1.
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,
84/7 = 84 × 9/7 × 9 = 756/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
45/9 = 45 × 7/9 × 7 = 315/63 - Add the two like fractions:
756/63 + 315/63 = 756 + 315/63 = 1071/63 - 1071/63 simplified gives 17/1
- So, 84/7 + 45/9 = 17/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/7+90/9 84/14+45/9 84/7+45/18 84/21+45/9 84/7+45/27 84/35+45/9 84/49+45/9 84/7+45/63