Question

If a+b=-4 ,b+c=-5 ,c+a=-11 find the value of a+b+c
​

Answer 1

Given :-

✷ a+b= -4 ------- 1

✷ b+c = -5. -------- 2

✷ c + a = -11. -------- 3

➦ Solution :-

➜ In Equation 1

✷ a+b = -4

⇛ b = -4-a -------- 4

➜ In equation 2

✷ b+c = -5

⇛c = -5 -b ------- 5

➜ In equation 3

✷ c+a = -11

⇛ a = -11 - c ----- 6

➦ Now, we have to find value of a + b + c, We will put the value of a,b,c from equation 4,5,6.....

➜ -11 -c -4 -a - 5-b

⇛ -20 - c -a - b