Add 8/4 and 20/42
1st number: 2 0/4, 2nd number: 20/42
8/4 + 20/42 is 52/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
8/4 = 8 × 21/4 × 21 = 168/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
20/42 = 20 × 2/42 × 2 = 40/84 - Add the two like fractions:
168/84 + 40/84 = 168 + 40/84 = 208/84 - 208/84 simplified gives 52/21
- So, 8/4 + 20/42 = 52/21
In mixed form: 210/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/4+20/42 8/4+40/42 8/4+20/84 24/4+20/42 8/4+60/42 8/12+20/42 40/4+20/42 8/20+20/42 56/4+20/42 8/28+20/42