Add 72/12 and 4/84
1st number: 6 0/12, 2nd number: 4/84
72/12 + 4/84 is 127/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
72/12 = 72 × 7/12 × 7 = 504/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
4/84 = 4 × 1/84 × 1 = 4/84 - Add the two like fractions:
504/84 + 4/84 = 504 + 4/84 = 508/84 - 508/84 simplified gives 127/21
- So, 72/12 + 4/84 = 127/21
In mixed form: 61/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/12+8/84 72/24+4/84 72/12+12/84 72/36+4/84 72/12+20/84 72/60+4/84 72/12+28/84 72/84+4/84