Add 12/8 and 30/7
1st number: 1 4/8, 2nd number: 4 2/7
12/8 + 30/7 is 81/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 7 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 8 × 7 = 56,
12/8 = 12 × 7/8 × 7 = 84/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
30/7 = 30 × 8/7 × 8 = 240/56 - Add the two like fractions:
84/56 + 240/56 = 84 + 240/56 = 324/56 - 324/56 simplified gives 81/14
- So, 12/8 + 30/7 = 81/14
In mixed form: 511/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/8+30/7 12/8+60/7 12/16+30/7 12/8+30/14 36/8+30/7 12/8+90/7 12/24+30/7 12/8+30/21 60/8+30/7 12/40+30/7 12/8+30/35 84/8+30/7 12/56+30/7 12/8+30/49