#F
titik potong
2x + y = 8
2x + 3y = 12 ....(kurangkan)
-2y = - 4
y = 4
2x + y = 8 , y = 4 --> 2x + 4 = 8
2x= 4
x = 2
nilai z = 5x + 4y
z = 5(2) + 4(2)
z = 18
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#F
titik potong
2x + y = 8
2x + 3y = 12 ....(kurangkan)
-2y = - 4
y = 4
2x + y = 8 , y = 4 --> 2x + 4 = 8
2x= 4
x = 2
nilai z = 5x + 4y
z = 5(2) + 4(2)
z = 18