Question

if a+b=7,c+d=11,b+c=10 find a+b+c​

Answer 1

Answer:

a+b=8,

b+c=10

c+a=12

(a+b) + (b +c) +(c +a) = (8 + 10 + 12)

(2a + 2b + 2c) = 30

Answer. (a + b + c) = 15.