Question

A+ B + C = 4000
B + C = 600
C+A = 500
find A, B and C​

Answer 1

ab+a+b=250

bc+b+c=300

ac+a+c=216

then find a+b+c

Answer 2

Answer:

A+B+C = 4000 -------(1)

Given that B+C = 600

Substitute this in equation (1)

A+600= 4000

A= 4000-600

A= 3400 ----(2)

Also given that C+A = 500

Substitute (2) in this equation

C+ 3400 = 500

C= 500-3400

C= -2900 -------(3)

Given that B+C = 600

substitute (3) in this

B +(-2900)= 600

B =3500