Add 12/9 and 42/63
1st number: 1 3/9, 2nd number: 42/63
12/9 + 42/63 is 2/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
12/9 = 12 × 7/9 × 7 = 84/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
42/63 = 42 × 1/63 × 1 = 42/63 - Add the two like fractions:
84/63 + 42/63 = 84 + 42/63 = 126/63 - 126/63 simplified gives 2/1
- So, 12/9 + 42/63 = 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/9+42/63 12/9+84/63 12/18+42/63 36/9+42/63 12/27+42/63 60/9+42/63 12/45+42/63 84/9+42/63 12/63+42/63