Add 72/42 and 30/75
1st number: 1 30/42, 2nd number: 30/75
72/42 + 30/75 is 74/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 75 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 42 × 25 = 1050,
72/42 = 72 × 25/42 × 25 = 1800/1050 - Likewise, for the 2nd fraction, since 75 × 14 = 1050,
30/75 = 30 × 14/75 × 14 = 420/1050 - Add the two like fractions:
1800/1050 + 420/1050 = 1800 + 420/1050 = 2220/1050 - 2220/1050 simplified gives 74/35
- So, 72/42 + 30/75 = 74/35
In mixed form: 24/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/42+60/75 72/84+30/75 72/42+90/75