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Jawabannya E (13)Semoga membantu ^^
-5 (spasi) 2x + 5y
8 (spasi) -7
4x + y = -5 |x2|
2x + 5y = 11 |x4|
eliminasi x
8x + 2y = -10
8x + 20y = 44
____________-
-18y = -54
-y = -3
y = 3
mencari x
4x + (3) = -5
4x = -5 - 3
4x = -8
x = -2
nilai -2x + 3y
-2(-2) + 3(3)
= 4 + 9
= 13