Add 84/42 and 12/63
1st number: 2 0/42, 2nd number: 12/63
84/42 + 12/63 is 46/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
84/42 = 84 × 3/42 × 3 = 252/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
12/63 = 12 × 2/63 × 2 = 24/126 - Add the two like fractions:
252/126 + 24/126 = 252 + 24/126 = 276/126 - 276/126 simplified gives 46/21
- So, 84/42 + 12/63 = 46/21
In mixed form: 24/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/42+24/63 84/42+36/63 84/42+60/63 84/42+84/63