Question

Among the following, an equation always consistence is
A) x + y = 0, x - y = 0
B) y = 3x, x = y
C) y = -2x, X = 2y
D) all​

Answer 1

D option is the answer because every equation contains = sign

Answer 2

Answer:

( A) x+y=0,x-y=0

Step-by-step explanation:

x+y=0

x-y=0

--------

x=y=0

-- -- --

x=-y=0

a1 b1

--- noteqal

a2 b2