Add 9/42 and 72/9, Solve 9/42 + 8 0/9 as a fraction

Add 9/42 and 72/9

1^st number: 9/42, 2^nd number: 8 0/9

9/42 + 72/9 is 115/14.

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,
9/42 = 9 × 3/42 × 3 = 27/126
Likewise, for the 2nd fraction, since 9 × 14 = 126,
72/9 = 72 × 14/9 × 14 = 1008/126
Add the two like fractions:
27/126 + 1008/126 = 27 + 1008/126 = 1035/126
1035/126 simplified gives 115/14
So, 9/42 + 72/9 = 115/14
In mixed form: 83/14

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad