Question

Add the rational numbers -7/13,-11/26and-3/39​

Answer 1

Answer:

-81/78

Step-by-step explanation:

(-7/13)+(-11/26)+(-3/39)

LCM of 13,26,39= 78, therefore, 78 will be the denominator

-7×6= -42

13×6= 78

-11×3= -33

26×3= 78

-3×2= -6

39×2= 78

Now, (-42)+(-33)+(-6)= -81

= -81/78