Add 30/84 and 8/7
1st number: 30/84, 2nd number: 1 1/7
30/84 + 8/7 is 3/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
30/84 = 30 × 1/84 × 1 = 30/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
8/7 = 8 × 12/7 × 12 = 96/84 - Add the two like fractions:
30/84 + 96/84 = 30 + 96/84 = 126/84 - 126/84 simplified gives 3/2
- So, 30/84 + 8/7 = 3/2
In mixed form: 11/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/84+8/7 30/84+16/7 30/84+8/14 90/84+8/7 30/84+24/7 30/84+8/21 30/84+40/7 30/84+8/35 30/84+56/7 30/84+8/49