Add 84/18 and 7/45
1st number: 4 12/18, 2nd number: 7/45
84/18 + 7/45 is 217/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
84/18 = 84 × 5/18 × 5 = 420/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
7/45 = 7 × 2/45 × 2 = 14/90 - Add the two like fractions:
420/90 + 14/90 = 420 + 14/90 = 434/90 - 434/90 simplified gives 217/45
- So, 84/18 + 7/45 = 217/45
In mixed form: 437/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+14/45 84/36+7/45 84/18+7/90 84/18+21/45 84/54+7/45 84/18+35/45 84/90+7/45 84/18+49/45