Add 72/84 and 12/32
72/84 + 12/32 is 69/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 84 × 8 = 672,
72/84 = 72 × 8/84 × 8 = 576/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
12/32 = 12 × 21/32 × 21 = 252/672 - Add the two like fractions:
576/672 + 252/672 = 576 + 252/672 = 828/672 - 828/672 simplified gives 69/56
- So, 72/84 + 12/32 = 69/56
In mixed form: 113/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/84+24/32 72/84+12/64 72/84+36/32 72/84+12/96 72/84+60/32 72/84+84/32