Add 16/42 and 36/63
16/42 + 36/63 is 20/21.
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,
16/42 = 16 × 3/42 × 3 = 48/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
36/63 = 36 × 2/63 × 2 = 72/126 - Add the two like fractions:
48/126 + 72/126 = 48 + 72/126 = 120/126 - 120/126 simplified gives 20/21
- So, 16/42 + 36/63 = 20/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/42+36/63 16/42+72/63 16/84+36/63 48/42+36/63 80/42+36/63