Add 15/25 and 42/7
1st number: 15/25, 2nd number: 6 0/7
15/25 + 42/7 is 33/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 7 is 175
Next, find the equivalent fraction of both fractional numbers with denominator 175 - For the 1st fraction, since 25 × 7 = 175,
15/25 = 15 × 7/25 × 7 = 105/175 - Likewise, for the 2nd fraction, since 7 × 25 = 175,
42/7 = 42 × 25/7 × 25 = 1050/175 - Add the two like fractions:
105/175 + 1050/175 = 105 + 1050/175 = 1155/175 - 1155/175 simplified gives 33/5
- So, 15/25 + 42/7 = 33/5
In mixed form: 63/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/25+42/7 15/25+84/7 15/50+42/7 15/25+42/14 45/25+42/7 15/75+42/7 15/25+42/21 75/25+42/7 15/25+42/35 15/25+42/49