Add 30/12 and 25/42
1st number: 2 6/12, 2nd number: 25/42
30/12 + 25/42 is 65/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
30/12 = 30 × 7/12 × 7 = 210/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
25/42 = 25 × 2/42 × 2 = 50/84 - Add the two like fractions:
210/84 + 50/84 = 210 + 50/84 = 260/84 - 260/84 simplified gives 65/21
- So, 30/12 + 25/42 = 65/21
In mixed form: 32/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12+25/42 30/12+50/42 30/24+25/42 30/12+25/84 90/12+25/42 30/12+75/42 30/36+25/42 30/60+25/42 30/84+25/42