Add 12/30 and 3/70
12/30 + 3/70 is 31/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
12/30 = 12 × 7/30 × 7 = 84/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
3/70 = 3 × 3/70 × 3 = 9/210 - Add the two like fractions:
84/210 + 9/210 = 84 + 9/210 = 93/210 - 93/210 simplified gives 31/70
- So, 12/30 + 3/70 = 31/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/30+3/70 12/30+6/70 12/60+3/70 36/30+3/70 12/30+9/70 12/90+3/70 60/30+3/70 12/30+15/70 84/30+3/70 12/30+21/70