Add 3/24 and 28/70
3/24 + 28/70 is 21/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 70 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 24 × 35 = 840,
3/24 = 3 × 35/24 × 35 = 105/840 - Likewise, for the 2nd fraction, since 70 × 12 = 840,
28/70 = 28 × 12/70 × 12 = 336/840 - Add the two like fractions:
105/840 + 336/840 = 105 + 336/840 = 441/840 - 441/840 simplified gives 21/40
- So, 3/24 + 28/70 = 21/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/24+28/70 3/24+56/70 3/48+28/70 9/24+28/70 3/24+84/70 3/72+28/70 15/24+28/70 21/24+28/70