What is c if: a+b+c = 77, a-c = b+c, and c = b/2

Answer 1

a = b + 2 c
b = 2 c

so a = 2 c + 2c = 4 c

a + b + c = 77

4 c + 2 c + c = 77

7 c = 77

c = 11

Answer 2

Thanks!

Answer 3

You are welcome.