Add 40/70 and 28/36
40/70 + 28/36 is 85/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 36 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 70 × 18 = 1260,
40/70 = 40 × 18/70 × 18 = 720/1260 - Likewise, for the 2nd fraction, since 36 × 35 = 1260,
28/36 = 28 × 35/36 × 35 = 980/1260 - Add the two like fractions:
720/1260 + 980/1260 = 720 + 980/1260 = 1700/1260 - 1700/1260 simplified gives 85/63
- So, 40/70 + 28/36 = 85/63
In mixed form: 122/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/70+28/36 40/70+56/36 40/70+28/72 40/70+84/36