Add 84/12 and 5/42
1st number: 7 0/12, 2nd number: 5/42
84/12 + 5/42 is 299/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
84/12 = 84 × 7/12 × 7 = 588/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
5/42 = 5 × 2/42 × 2 = 10/84 - Add the two like fractions:
588/84 + 10/84 = 588 + 10/84 = 598/84 - 598/84 simplified gives 299/42
- So, 84/12 + 5/42 = 299/42
In mixed form: 75/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12+10/42 84/24+5/42 84/12+5/84 84/12+15/42 84/36+5/42 84/12+25/42 84/60+5/42 84/12+35/42