jika 2x-y=10 dan 4x+2y=4 maka 2x+2y=

2x-y = 10 (×2) --> 4x-2y = 20
4x+2y = 4 (×1) --> 4x+2y = 4

4x-2y = 20
4x+2y =4
----------------- -
-4y = 16
y = -4

2x-y = 10
2x+4 = 10
2x = 6
x = 3

2x+2y = 2(3)+2(-4)
=6+(-8)
=-2

Semoga membantu
Maaf kalau salah