Add 18/21 and 10/25
18/21 + 10/25 is 44/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 25 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
18/21 = 18 × 25/21 × 25 = 450/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
10/25 = 10 × 21/25 × 21 = 210/525 - Add the two like fractions:
450/525 + 210/525 = 450 + 210/525 = 660/525 - 660/525 simplified gives 44/35
- So, 18/21 + 10/25 = 44/35
In mixed form: 19/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/21+10/25 18/21+20/25 18/42+10/25 18/21+10/50 54/21+10/25 18/21+30/25 18/63+10/25 18/21+10/75 90/21+10/25 18/21+50/25 18/21+70/25