Add 12/30 and 72/7
1st number: 12/30, 2nd number: 10 2/7
12/30 + 72/7 is 374/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 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 7 × 30 = 210,
72/7 = 72 × 30/7 × 30 = 2160/210 - Add the two like fractions:
84/210 + 2160/210 = 84 + 2160/210 = 2244/210 - 2244/210 simplified gives 374/35
- So, 12/30 + 72/7 = 374/35
In mixed form: 1024/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/30+72/7 12/60+72/7 12/30+72/14 36/30+72/7 12/90+72/7 12/30+72/21 60/30+72/7 12/30+72/35 84/30+72/7 12/30+72/49