Add 45/25 and 10/21
1st number: 1 20/25, 2nd number: 10/21
45/25 + 10/21 is 239/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 21 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 25 × 21 = 525,
45/25 = 45 × 21/25 × 21 = 945/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
10/21 = 10 × 25/21 × 25 = 250/525 - Add the two like fractions:
945/525 + 250/525 = 945 + 250/525 = 1195/525 - 1195/525 simplified gives 239/105
- So, 45/25 + 10/21 = 239/105
In mixed form: 229/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/25+10/21 45/25+20/21 45/50+10/21 45/25+10/42 45/25+30/21 45/75+10/21 45/25+10/63 45/25+50/21 45/25+70/21