Add 12/84 and 54/7
1st number: 12/84, 2nd number: 7 5/7
12/84 + 54/7 is 55/7.
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,
12/84 = 12 × 1/84 × 1 = 12/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
54/7 = 54 × 12/7 × 12 = 648/84 - Add the two like fractions:
12/84 + 648/84 = 12 + 648/84 = 660/84 - 660/84 simplified gives 55/7
- So, 12/84 + 54/7 = 55/7
In mixed form: 76/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/84+54/7 12/84+54/14 36/84+54/7 12/84+54/21 60/84+54/7 12/84+54/35 12/84+54/49