Question

PLEASE HELP!!

Add the equations.

2x-y=-7
+ 3x+y=12
----------------------


A. -x=-19

B -x=5

C 5x-2y=-19

D 5x=5

Answer 1

D

Explanation:

adding equations means adding their elements per type (per variable and constants).

so,

2x - y = -7

3x + y = 12

--------------------

5x 0 = 5

Answer 2

D. 5x = 5

Explanation:

2x - y = -7

+ 3x + y = 12

------------------

5x = 5

Answer: 5x = 5