Add 84/7 and 40/45
1st number: 12 0/7, 2nd number: 40/45
84/7 + 40/45 is 116/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 7 × 45 = 315,
84/7 = 84 × 45/7 × 45 = 3780/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
40/45 = 40 × 7/45 × 7 = 280/315 - Add the two like fractions:
3780/315 + 280/315 = 3780 + 280/315 = 4060/315 - 4060/315 simplified gives 116/9
- So, 84/7 + 40/45 = 116/9
In mixed form: 128/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/7+80/45 84/14+40/45 84/7+40/90 84/21+40/45 84/35+40/45 84/49+40/45