Add 3/18 and 81/25, Solve 3/18 + 3 6/25 as a fraction

Add 3/18 and 81/25

1^st number: 3/18, 2^nd number: 3 6/25

3/18 + 81/25 is 511/150.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 25 is 450

Next, find the equivalent fraction of both fractional numbers with denominator 450
For the 1st fraction, since 18 × 25 = 450,
3/18 = 3 × 25/18 × 25 = 75/450
Likewise, for the 2nd fraction, since 25 × 18 = 450,
81/25 = 81 × 18/25 × 18 = 1458/450
Add the two like fractions:
75/450 + 1458/450 = 75 + 1458/450 = 1533/450
1533/450 simplified gives 511/150
So, 3/18 + 81/25 = 511/150
In mixed form: 361/150

MathStep (Works offline)

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