Add 12/10 and 20/40
1st number: 1 2/10, 2nd number: 20/40
12/10 + 20/40 is 17/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
12/10 = 12 × 4/10 × 4 = 48/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
20/40 = 20 × 1/40 × 1 = 20/40 - Add the two like fractions:
48/40 + 20/40 = 48 + 20/40 = 68/40 - 68/40 simplified gives 17/10
- So, 12/10 + 20/40 = 17/10
In mixed form: 17/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/10+20/40 12/20+20/40 12/10+20/80 36/10+20/40 12/10+60/40 12/30+20/40 60/10+20/40 12/50+20/40 84/10+20/40 12/70+20/40