Add 25/7 and 3/18, Solve 3 4/7 + 3/18 as a fraction

Add 25/7 and 3/18

1^st number: 3 4/7, 2^nd number: 3/18

25/7 + 3/18 is 157/42.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 7 × 18 = 126,
25/7 = 25 × 18/7 × 18 = 450/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
3/18 = 3 × 7/18 × 7 = 21/126
Add the two like fractions:
450/126 + 21/126 = 450 + 21/126 = 471/126
471/126 simplified gives 157/42
So, 25/7 + 3/18 = 157/42
In mixed form: 331/42

MathStep (Works offline)

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