Add 12/70 and 3/40
12/70 + 3/40 is 69/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
12/70 = 12 × 4/70 × 4 = 48/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
3/40 = 3 × 7/40 × 7 = 21/280 - Add the two like fractions:
48/280 + 21/280 = 48 + 21/280 = 69/280 - So, 12/70 + 3/40 = 69/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/70+3/40 12/70+6/40 12/70+3/80 36/70+3/40 12/70+9/40 60/70+3/40 12/70+15/40 84/70+3/40 12/70+21/40