Add 25/45 and 18/7, Solve 25/45 + 2 4/7 as a fraction

Add 25/45 and 18/7

1^st number: 25/45, 2^nd number: 2 4/7

25/45 + 18/7 is 197/63.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 45 × 7 = 315,
25/45 = 25 × 7/45 × 7 = 175/315
Likewise, for the 2nd fraction, since 7 × 45 = 315,
18/7 = 18 × 45/7 × 45 = 810/315
Add the two like fractions:
175/315 + 810/315 = 175 + 810/315 = 985/315
985/315 simplified gives 197/63
So, 25/45 + 18/7 = 197/63
In mixed form: 38/63

MathStep (Works offline)

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