Add 84/42 and 7/10
1st number: 2 0/42, 2nd number: 7/10
84/42 + 7/10 is 27/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
84/42 = 84 × 5/42 × 5 = 420/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
7/10 = 7 × 21/10 × 21 = 147/210 - Add the two like fractions:
420/210 + 147/210 = 420 + 147/210 = 567/210 - 567/210 simplified gives 27/10
- So, 84/42 + 7/10 = 27/10
In mixed form: 27/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/42+14/10 84/42+7/20 84/42+21/10 84/42+7/30 84/42+35/10 84/42+7/50 84/42+49/10 84/42+7/70