Choose the equivalent system of linear equations that will produce the same solution as the one given below.

4x - 2y = 6
2x + y = 5

a) -4x - 2y = 10
-4y = 4

b) -4x - 5y = -1
-7y = 5

c) 3x + 2y = 6
7x = 12

d) 4x + 2y = 10
8x = 16

4 x - 2 y = 6
2 x + y = 5       /  * 2  ( we will multiply both sides by 2 )

4 x  - 2 y = 6
+
4 x  + 2 y = 10

8 x = 16;    x = 2
4 + y = 5
y = 5 - 4;   y = 1
In the system of equations D :
8 x = 16;  x = 2 ,
8 + 2 y = 10
2 y = 2,  y = 1
D ) is the equivalent system

1.17+3.99a. you combine the terms with a to create 3.99 and the 1.17 stays because it has no like terms or a variable