Add 42/9 and 12/28
1st number: 4 6/9, 2nd number: 12/28
42/9 + 12/28 is 107/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 9 × 28 = 252,
42/9 = 42 × 28/9 × 28 = 1176/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
12/28 = 12 × 9/28 × 9 = 108/252 - Add the two like fractions:
1176/252 + 108/252 = 1176 + 108/252 = 1284/252 - 1284/252 simplified gives 107/21
- So, 42/9 + 12/28 = 107/21
In mixed form: 52/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9+12/28 42/9+24/28 42/18+12/28 42/9+12/56 42/9+36/28 42/27+12/28 42/9+12/84 42/9+60/28 42/45+12/28 42/9+84/28 42/63+12/28