Add 28/56 and 12/70
28/56 + 12/70 is 47/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
28/56 = 28 × 5/56 × 5 = 140/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
12/70 = 12 × 4/70 × 4 = 48/280 - Add the two like fractions:
140/280 + 48/280 = 140 + 48/280 = 188/280 - 188/280 simplified gives 47/70
- So, 28/56 + 12/70 = 47/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/56+24/70 84/56+12/70 28/56+36/70 28/56+60/70 28/56+84/70