Question

Using elimination to solve the system 2x + y = 8 and x + y = 4, which of the following could be the first step?
A.) 2x + y = 8--------> 2x + y = 8
(x + y = 4)(-1)---> -x - y = -4
B.)2x + (4 - x) = 8
C.) 2x + y = x + y
D.) 3x + 2y = 12
x = 4

Answer 1

a

Answer 2

thanks

Answer 3

^_^