Add 70/25 and 21/7
1st number: 2 20/25, 2nd number: 3 0/7
70/25 + 21/7 is 29/5.
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,
70/25 = 70 × 7/25 × 7 = 490/175 - Likewise, for the 2nd fraction, since 7 × 25 = 175,
21/7 = 21 × 25/7 × 25 = 525/175 - Add the two like fractions:
490/175 + 525/175 = 490 + 525/175 = 1015/175 - 1015/175 simplified gives 29/5
- So, 70/25 + 21/7 = 29/5
In mixed form: 54/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/25+42/7 70/50+21/7 70/25+21/14 70/25+63/7 70/75+21/7 70/25+21/35 70/25+21/49