Add 72/28 and 10/42
1st number: 2 16/28, 2nd number: 10/42
72/28 + 10/42 is 59/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
72/28 = 72 × 3/28 × 3 = 216/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
10/42 = 10 × 2/42 × 2 = 20/84 - Add the two like fractions:
216/84 + 20/84 = 216 + 20/84 = 236/84 - 236/84 simplified gives 59/21
- So, 72/28 + 10/42 = 59/21
In mixed form: 217/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/28+20/42 72/56+10/42 72/28+10/84 72/28+30/42 72/84+10/42 72/28+50/42 72/28+70/42