Add 10/70 and 4/12
10/70 + 4/12 is 10/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
10/70 = 10 × 6/70 × 6 = 60/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
4/12 = 4 × 35/12 × 35 = 140/420 - Add the two like fractions:
60/420 + 140/420 = 60 + 140/420 = 200/420 - 200/420 simplified gives 10/21
- So, 10/70 + 4/12 = 10/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/70+4/12 10/70+8/12 10/70+4/24 30/70+4/12 10/70+4/36 50/70+4/12 10/70+20/12 10/70+4/60 10/70+28/12 10/70+4/84