Add 72/18 and 70/84
1st number: 4 0/18, 2nd number: 70/84
72/18 + 70/84 is 29/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
72/18 = 72 × 14/18 × 14 = 1008/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
70/84 = 70 × 3/84 × 3 = 210/252 - Add the two like fractions:
1008/252 + 210/252 = 1008 + 210/252 = 1218/252 - 1218/252 simplified gives 29/6
- So, 72/18 + 70/84 = 29/6
In mixed form: 45/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/36+70/84 72/54+70/84 72/90+70/84