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1 -4
= (2 x -4) - (1x1) = -9
Dx = [1 5]
4 -5
= (1x-5) - (5x4) = -5 - 20 => -25
Dy = [ 2 5]
1 -5
= -10 - 5 => -15
nilai x :
=Dx : D
= -25 : -9
= 25/9
nilai y :
= Dy : D
= -15 : -9
=15/9 => 5/3
Coba kamu periksa soalnya, ada yang salah atau gak.
Soalnya jawabannya kok dlm bentuk pecahan semua -.-