Add 36/12 and 54/42
1st number: 3 0/12, 2nd number: 1 12/42
36/12 + 54/42 is 30/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
36/12 = 36 × 7/12 × 7 = 252/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
54/42 = 54 × 2/42 × 2 = 108/84 - Add the two like fractions:
252/84 + 108/84 = 252 + 108/84 = 360/84 - 360/84 simplified gives 30/7
- So, 36/12 + 54/42 = 30/7
In mixed form: 42/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/12+54/42 36/24+54/42 36/12+54/84 36/60+54/42 36/84+54/42