Add 84/18 and 70/5
1st number: 4 12/18, 2nd number: 14 0/5
84/18 + 70/5 is 56/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 5 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 5 × 18 = 90,
70/5 = 70 × 18/5 × 18 = 1260/90 - Add the two like fractions:
420/90 + 1260/90 = 420 + 1260/90 = 1680/90 - 1680/90 simplified gives 56/3
- So, 84/18 + 70/5 = 56/3
In mixed form: 182/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/36+70/5 84/18+70/10 84/54+70/5 84/18+70/15 84/90+70/5 84/18+70/25 84/18+70/35