Add 12/27 and 40/70
12/27 + 40/70 is 64/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 70 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 27 × 70 = 1890,
12/27 = 12 × 70/27 × 70 = 840/1890 - Likewise, for the 2nd fraction, since 70 × 27 = 1890,
40/70 = 40 × 27/70 × 27 = 1080/1890 - Add the two like fractions:
840/1890 + 1080/1890 = 840 + 1080/1890 = 1920/1890 - 1920/1890 simplified gives 64/63
- So, 12/27 + 40/70 = 64/63
In mixed form: 11/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/27+40/70 12/27+80/70 12/54+40/70 36/27+40/70 12/81+40/70 60/27+40/70 84/27+40/70