Add 12/30 and 42/10
1st number: 12/30, 2nd number: 4 2/10
12/30 + 42/10 is 23/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
12/30 = 12 × 1/30 × 1 = 12/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
42/10 = 42 × 3/10 × 3 = 126/30 - Add the two like fractions:
12/30 + 126/30 = 12 + 126/30 = 138/30 - 138/30 simplified gives 23/5
- So, 12/30 + 42/10 = 23/5
In mixed form: 43/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/30+42/10 12/30+84/10 12/60+42/10 12/30+42/20 36/30+42/10 12/90+42/10 12/30+42/30 60/30+42/10 12/30+42/50 84/30+42/10 12/30+42/70