Add 12/28 and 8/40
12/28 + 8/40 is 22/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
12/28 = 12 × 10/28 × 10 = 120/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
8/40 = 8 × 7/40 × 7 = 56/280 - Add the two like fractions:
120/280 + 56/280 = 120 + 56/280 = 176/280 - 176/280 simplified gives 22/35
- So, 12/28 + 8/40 = 22/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/28+8/40 12/28+16/40 12/56+8/40 12/28+8/80 36/28+8/40 12/28+24/40 12/84+8/40 60/28+8/40 84/28+8/40 12/28+56/40