Add 16/56 and 12/21
16/56 + 12/21 is 6/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
16/56 = 16 × 3/56 × 3 = 48/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
12/21 = 12 × 8/21 × 8 = 96/168 - Add the two like fractions:
48/168 + 96/168 = 48 + 96/168 = 144/168 - 144/168 simplified gives 6/7
- So, 16/56 + 12/21 = 6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/56+12/21 16/56+24/21 16/56+12/42 48/56+12/21 16/56+36/21 16/56+12/63 80/56+12/21 16/56+60/21 16/56+84/21