Add 9/63 and 8/12
9/63 + 8/12 is 17/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 12 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
9/63 = 9 × 4/63 × 4 = 36/252 - Likewise, for the 2nd fraction, since 12 × 21 = 252,
8/12 = 8 × 21/12 × 21 = 168/252 - Add the two like fractions:
36/252 + 168/252 = 36 + 168/252 = 204/252 - 204/252 simplified gives 17/21
- So, 9/63 + 8/12 = 17/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/63+8/12 9/63+16/12 9/63+8/24 27/63+8/12 9/63+24/12 9/63+8/36 45/63+8/12 9/63+40/12 9/63+8/60 9/63+56/12 9/63+8/84