Add 24/45 and 21/40
24/45 + 21/40 is 127/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
24/45 = 24 × 8/45 × 8 = 192/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
21/40 = 21 × 9/40 × 9 = 189/360 - Add the two like fractions:
192/360 + 189/360 = 192 + 189/360 = 381/360 - 381/360 simplified gives 127/120
- So, 24/45 + 21/40 = 127/120
In mixed form: 17/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/45+21/40 24/45+42/40 24/90+21/40 24/45+21/80 72/45+21/40 24/45+63/40