Add 8/84 and 15/42
8/84 + 15/42 is 19/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
8/84 = 8 × 1/84 × 1 = 8/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
15/42 = 15 × 2/42 × 2 = 30/84 - Add the two like fractions:
8/84 + 30/84 = 8 + 30/84 = 38/84 - 38/84 simplified gives 19/42
- So, 8/84 + 15/42 = 19/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/84+15/42 8/84+30/42 8/84+15/84 24/84+15/42 8/84+45/42 40/84+15/42 8/84+75/42 56/84+15/42