Add 70/42 and 72/9
1st number: 1 28/42, 2nd number: 8 0/9
70/42 + 72/9 is 29/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 9 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
70/42 = 70 × 3/42 × 3 = 210/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
72/9 = 72 × 14/9 × 14 = 1008/126 - Add the two like fractions:
210/126 + 1008/126 = 210 + 1008/126 = 1218/126 - 1218/126 simplified gives 29/3
- So, 70/42 + 72/9 = 29/3
In mixed form: 92/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/84+72/9 70/42+72/18 70/42+72/27 70/42+72/45 70/42+72/63