Add 30/12 and 75/70
1st number: 2 6/12, 2nd number: 1 5/70
30/12 + 75/70 is 25/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
30/12 = 30 × 35/12 × 35 = 1050/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
75/70 = 75 × 6/70 × 6 = 450/420 - Add the two like fractions:
1050/420 + 450/420 = 1050 + 450/420 = 1500/420 - 1500/420 simplified gives 25/7
- So, 30/12 + 75/70 = 25/7
In mixed form: 34/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12+75/70 30/24+75/70 90/12+75/70 30/36+75/70 30/60+75/70 30/84+75/70