Add 25/75 and 5/4, Solve 25/75 + 1 1/4 as a fraction

Add 25/75 and 5/4

1^st number: 25/75, 2^nd number: 1 1/4

25/75 + 5/4 is 19/12.

Find the least common denominator or LCM of the two denominators:
LCM of 75 and 4 is 300

Next, find the equivalent fraction of both fractional numbers with denominator 300
For the 1st fraction, since 75 × 4 = 300,
25/75 = 25 × 4/75 × 4 = 100/300
Likewise, for the 2nd fraction, since 4 × 75 = 300,
5/4 = 5 × 75/4 × 75 = 375/300
Add the two like fractions:
100/300 + 375/300 = 100 + 375/300 = 475/300
475/300 simplified gives 19/12
So, 25/75 + 5/4 = 19/12
In mixed form: 17/12

MathStep (Works offline)

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