Add 72/42 and 5/35
1st number: 1 30/42, 2nd number: 5/35
72/42 + 5/35 is 13/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
72/42 = 72 × 5/42 × 5 = 360/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
5/35 = 5 × 6/35 × 6 = 30/210 - Add the two like fractions:
360/210 + 30/210 = 360 + 30/210 = 390/210 - 390/210 simplified gives 13/7
- So, 72/42 + 5/35 = 13/7
In mixed form: 16/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/42+10/35 72/84+5/35 72/42+5/70 72/42+15/35 72/42+25/35