Question

HELP PLEASE

If x + y = z and x = y, then all of the following are true EXCEPT
A) 2x + 2y = 2z
B) x - 2 = y-z
C) x = z/2
D) z- y = 2x

Answer 1

It seems like both b and d are false. If we plug in 3 for x and y and 6 for z then a and c would both be true but b and d would both me false.