Add 42/63 and 28/36
42/63 + 28/36 is 13/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
42/63 = 42 × 4/63 × 4 = 168/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
28/36 = 28 × 7/36 × 7 = 196/252 - Add the two like fractions:
168/252 + 196/252 = 168 + 196/252 = 364/252 - 364/252 simplified gives 13/9
- So, 42/63 + 28/36 = 13/9
In mixed form: 14/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63+28/36 42/63+56/36 42/63+28/72 42/63+84/36