Add 12/42 and 4/54
12/42 + 4/54 is 68/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
12/42 = 12 × 9/42 × 9 = 108/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
4/54 = 4 × 7/54 × 7 = 28/378 - Add the two like fractions:
108/378 + 28/378 = 108 + 28/378 = 136/378 - 136/378 simplified gives 68/189
- So, 12/42 + 4/54 = 68/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/42+4/54 12/42+8/54 12/84+4/54 36/42+4/54 12/42+12/54 60/42+4/54 12/42+20/54 84/42+4/54 12/42+28/54