Question

if a + b is equal to 12, b + c equal to 17, c + a is equal to 11, then what is the value of a + b + c​

Answer 1

Step-by-step explanation:

a+ b=12

b+c=17

c+a=11

adding we get

a+b+b+c+c+a=12+17+11

2(a+b+c)=40

a+b+c=40/2

a+b+c=20