Add 12/84 and 45/7
1st number: 12/84, 2nd number: 6 3/7
12/84 + 45/7 is 46/7.
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,
45/7 = 45 × 12/7 × 12 = 540/84 - Add the two like fractions:
12/84 + 540/84 = 12 + 540/84 = 552/84 - 552/84 simplified gives 46/7
- So, 12/84 + 45/7 = 46/7
In mixed form: 64/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/84+45/7 12/84+90/7 12/84+45/14 36/84+45/7 12/84+45/21 60/84+45/7 12/84+45/35 12/84+45/49