Add 21/45 and 24/8
1st number: 21/45, 2nd number: 3 0/8
21/45 + 24/8 is 52/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
21/45 = 21 × 8/45 × 8 = 168/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
24/8 = 24 × 45/8 × 45 = 1080/360 - Add the two like fractions:
168/360 + 1080/360 = 168 + 1080/360 = 1248/360 - 1248/360 simplified gives 52/15
- So, 21/45 + 24/8 = 52/15
In mixed form: 37/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/45+24/8 21/45+48/8 21/90+24/8 21/45+24/16 63/45+24/8 21/45+72/8 21/45+24/40 21/45+24/56