Add 8/42 and 72/63
1st number: 8/42, 2nd number: 1 9/63
8/42 + 72/63 is 4/3.
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,
8/42 = 8 × 3/42 × 3 = 24/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
72/63 = 72 × 2/63 × 2 = 144/126 - Add the two like fractions:
24/126 + 144/126 = 24 + 144/126 = 168/126 - 168/126 simplified gives 4/3
- So, 8/42 + 72/63 = 4/3
In mixed form: 11/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/42+72/63 8/84+72/63 24/42+72/63 40/42+72/63 56/42+72/63