Add 30/25 and 18/40
1st number: 1 5/25, 2nd number: 18/40
30/25 + 18/40 is 33/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 40 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 25 × 8 = 200,
30/25 = 30 × 8/25 × 8 = 240/200 - Likewise, for the 2nd fraction, since 40 × 5 = 200,
18/40 = 18 × 5/40 × 5 = 90/200 - Add the two like fractions:
240/200 + 90/200 = 240 + 90/200 = 330/200 - 330/200 simplified gives 33/20
- So, 30/25 + 18/40 = 33/20
In mixed form: 113/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/25+18/40 30/25+36/40 30/50+18/40 30/25+18/80 90/25+18/40 30/25+54/40 30/75+18/40 30/25+90/40