Add 25/21 and 4/18
1st number: 1 4/21, 2nd number: 4/18
25/21 + 4/18 is 89/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 21 × 6 = 126,
25/21 = 25 × 6/21 × 6 = 150/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
4/18 = 4 × 7/18 × 7 = 28/126 - Add the two like fractions:
150/126 + 28/126 = 150 + 28/126 = 178/126 - 178/126 simplified gives 89/63
- So, 25/21 + 4/18 = 89/63
In mixed form: 126/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21+4/18 25/21+8/18 25/42+4/18 25/21+4/36 75/21+4/18 25/21+12/18 25/63+4/18 25/21+4/54 25/21+20/18 25/21+4/90 25/21+28/18