Add 16/84 and 12/21
16/84 + 12/21 is 16/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
16/84 = 16 × 1/84 × 1 = 16/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
12/21 = 12 × 4/21 × 4 = 48/84 - Add the two like fractions:
16/84 + 48/84 = 16 + 48/84 = 64/84 - 64/84 simplified gives 16/21
- So, 16/84 + 12/21 = 16/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/84+12/21 16/84+24/21 16/84+12/42 48/84+12/21 16/84+36/21 16/84+12/63 80/84+12/21 16/84+60/21 16/84+84/21