Question

If A-A-A=10 B-B-B=20 C-C-C=30 then A+B+C=

Answer 1

Step-by-step explanation:

-3A = 10

A = -10/3

-3B = 20

B = -20/3

-3C = 30

C = -10

A + B + C = -10/3 + (-20/3) + (-10)

Solve this