Add 84/63 and 30/12
1st number: 1 21/63, 2nd number: 2 6/12
84/63 + 30/12 is 23/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 12 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
84/63 = 84 × 4/63 × 4 = 336/252 - Likewise, for the 2nd fraction, since 12 × 21 = 252,
30/12 = 30 × 21/12 × 21 = 630/252 - Add the two like fractions:
336/252 + 630/252 = 336 + 630/252 = 966/252 - 966/252 simplified gives 23/6
- So, 84/63 + 30/12 = 23/6
In mixed form: 35/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63+60/12 84/63+30/24 84/63+90/12 84/63+30/36 84/63+30/60 84/63+30/84