Add 12/30 and 42/35
1st number: 12/30, 2nd number: 1 7/35
12/30 + 42/35 is 8/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
12/30 = 12 × 7/30 × 7 = 84/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
42/35 = 42 × 6/35 × 6 = 252/210 - Add the two like fractions:
84/210 + 252/210 = 84 + 252/210 = 336/210 - 336/210 simplified gives 8/5
- So, 12/30 + 42/35 = 8/5
In mixed form: 13/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/30+42/35 12/30+84/35 12/60+42/35 12/30+42/70 36/30+42/35 12/90+42/35 60/30+42/35 84/30+42/35