Add 70/42 and 20/16
1st number: 1 28/42, 2nd number: 1 4/16
70/42 + 20/16 is 35/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 42 × 8 = 336,
70/42 = 70 × 8/42 × 8 = 560/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
20/16 = 20 × 21/16 × 21 = 420/336 - Add the two like fractions:
560/336 + 420/336 = 560 + 420/336 = 980/336 - 980/336 simplified gives 35/12
- So, 70/42 + 20/16 = 35/12
In mixed form: 211/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/42+40/16 70/84+20/16 70/42+20/32 70/42+60/16 70/42+20/48 70/42+20/80