Jika 2x+5y=11 dan 4x-3y=-17, maka 2x-y adalah..... Tolong dijawab, dengan cara kerja.....

2x + 5y = 11 | x 2 |
4x - 3y = - 17

4x + 10y = 22
4x - 3y = -17
---------------------- -
13y = 39
y = 3

2x + 5y = 11
2x + 5(3) = 11
2x + 15 =11
2x = 11-15
2x = -4
x = -2

Dit 2x - y
= 2(-2) - 3
= -4-3
= -7

2x + 5y = 11 (dikali 2)
4x - 3y = -17 (dikali 1)

4x + 10y = 22
4x - 3y = -17
------------------ -
13y = 39
y = 39/13
y = 3

2x + 5y = 11
2x + (5.3) = 11
2x = 11 - 15
2x = -4
x = -4/2
x = -2

nilai 2x - y
= (2.-2) - 3
= -4 - 3
= -7

jadi, nilai dari 2x - y = -7

semoga membantu dan bermanfaat