Add 24/40 and 4/21
24/40 + 4/21 is 83/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 21 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
24/40 = 24 × 21/40 × 21 = 504/840 - Likewise, for the 2nd fraction, since 21 × 40 = 840,
4/21 = 4 × 40/21 × 40 = 160/840 - Add the two like fractions:
504/840 + 160/840 = 504 + 160/840 = 664/840 - 664/840 simplified gives 83/105
- So, 24/40 + 4/21 = 83/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/40+4/21 24/40+8/21 24/80+4/21 24/40+4/42 72/40+4/21 24/40+12/21 24/40+4/63 24/40+20/21 24/40+28/21