Add 18/42 and 16/18
18/42 + 16/18 is 83/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
18/42 = 18 × 3/42 × 3 = 54/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
16/18 = 16 × 7/18 × 7 = 112/126 - Add the two like fractions:
54/126 + 112/126 = 54 + 112/126 = 166/126 - 166/126 simplified gives 83/63
- So, 18/42 + 16/18 = 83/63
In mixed form: 120/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/42+16/18 18/42+32/18 18/84+16/18 18/42+16/36 54/42+16/18 18/42+48/18 18/42+16/54 90/42+16/18 18/42+80/18 18/42+16/90