Add 27/18 and 40/70
1st number: 1 9/18, 2nd number: 40/70
27/18 + 40/70 is 29/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 18 × 35 = 630,
27/18 = 27 × 35/18 × 35 = 945/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
40/70 = 40 × 9/70 × 9 = 360/630 - Add the two like fractions:
945/630 + 360/630 = 945 + 360/630 = 1305/630 - 1305/630 simplified gives 29/14
- So, 27/18 + 40/70 = 29/14
In mixed form: 21/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/18+40/70 27/18+80/70 27/36+40/70 81/18+40/70 27/54+40/70 27/90+40/70