Add 42/9 and 5/42, Solve 4 6/9 + 5/42 as a fraction

Add 42/9 and 5/42

1^st number: 4 6/9, 2^nd number: 5/42

42/9 + 5/42 is 67/14.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 42 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 9 × 14 = 126,
42/9 = 42 × 14/9 × 14 = 588/126
Likewise, for the 2nd fraction, since 42 × 3 = 126,
5/42 = 5 × 3/42 × 3 = 15/126
Add the two like fractions:
588/126 + 15/126 = 588 + 15/126 = 603/126
603/126 simplified gives 67/14
So, 42/9 + 5/42 = 67/14
In mixed form: 411/14

MathStep (Works offline)

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