Add 20/24 and 25/70
20/24 + 25/70 is 25/21.
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,
20/24 = 20 × 35/24 × 35 = 700/840 - Likewise, for the 2nd fraction, since 70 × 12 = 840,
25/70 = 25 × 12/70 × 12 = 300/840 - Add the two like fractions:
700/840 + 300/840 = 700 + 300/840 = 1000/840 - 1000/840 simplified gives 25/21
- So, 20/24 + 25/70 = 25/21
In mixed form: 14/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/24+25/70 20/24+50/70 20/48+25/70 60/24+25/70 20/24+75/70 20/72+25/70