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Verified answer
2 R = SMaka :
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2 -1 1 x+y -2 2z
2 x ( -2 -1 -3 ) = ( -4 x 6 )
-3 1 -2 -6 2 -4
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4 -2 2 x+y -2 2z
[ -4 -2 -6 ] = [ -4 x 6 ]
-6 2 -4 = -6 2 -4
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Unsur yg seletak :
-2 = x
2z = 2 maka z = 1
x+y = 4
-2+y = 4
y = 4+2
y = 6
maka x + y + z = -2 + 6 + 1
= 5
Bagian C.