Question

Please help me!!!!!!!

a+b=9 a+c=4 b+c=5 . Find a+b+c.

(A) 4 (B) 5 (C) 7 (D) 8 (E) 9

show your work please.
thanks!

Answer 1

E(9) pls mark brainleast

Explanation:

If you add the left sides you get 2a+2b=2c then add the right sides which is 18. Now you have an equation 2a+2b+2c=18 then you can factor out the 2 that becomes 2(a+b+c)=18 then divide by two on both sides then get a+b+c=9.

Answer 2

(E) 9

Explanation:

A= 4

B= 5

C= 0

a+b+c= 4+5+0= 9

a+b=9= 4+5=9

a+c=4= 4+0=4

b+c=5= 5+0= 5