Add 42/72 and 63/27
1st number: 42/72, 2nd number: 2 9/27
42/72 + 63/27 is 35/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 27 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 72 × 3 = 216,
42/72 = 42 × 3/72 × 3 = 126/216 - Likewise, for the 2nd fraction, since 27 × 8 = 216,
63/27 = 63 × 8/27 × 8 = 504/216 - Add the two like fractions:
126/216 + 504/216 = 126 + 504/216 = 630/216 - 630/216 simplified gives 35/12
- So, 42/72 + 63/27 = 35/12
In mixed form: 211/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/72+63/27 42/72+63/54 42/72+63/81