Add 12/25 and 42/45
12/25 + 42/45 is 106/75.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 45 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 25 × 9 = 225,
12/25 = 12 × 9/25 × 9 = 108/225 - Likewise, for the 2nd fraction, since 45 × 5 = 225,
42/45 = 42 × 5/45 × 5 = 210/225 - Add the two like fractions:
108/225 + 210/225 = 108 + 210/225 = 318/225 - 318/225 simplified gives 106/75
- So, 12/25 + 42/45 = 106/75
In mixed form: 131/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/25+42/45 12/25+84/45 12/50+42/45 12/25+42/90 36/25+42/45 12/75+42/45 60/25+42/45 84/25+42/45