Add 84/42 and 70/18
1st number: 2 0/42, 2nd number: 3 16/18
84/42 + 70/18 is 53/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
84/42 = 84 × 3/42 × 3 = 252/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
70/18 = 70 × 7/18 × 7 = 490/126 - Add the two like fractions:
252/126 + 490/126 = 252 + 490/126 = 742/126 - 742/126 simplified gives 53/9
- So, 84/42 + 70/18 = 53/9
In mixed form: 58/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/42+70/36 84/42+70/54 84/42+70/90