2×+y=3 ... ( ) 3×+2y=1... ( ) Penyelesaian: Matriks keoefisien:

2×+y=3 … ( )
3×+2y=1… ( )
Penyelesaian:
Matriks keoefisien:

Jawaban Terkonfirmasi

$left[begin{array}{ccc}2&1\3&2\end{array}right]. left[begin{array}{ccc}x\y\end{array}right]= left[begin{array}{ccc}3\1\end{array}right]$

Δ = $left[begin{array}{ccc}2&1\3&2\end{array}right]=2.2-1.3=1$

Δx = $left[begin{array}{ccc}3&1\1&2\end{array}right]=3.2-1.1=5$

Δy = $left[begin{array}{ccc}2&3\3&1\end{array}right]=2.1-3.3=-7$

x = Δx / Δ
= 5/1 = 5

y = Δy / Δ
= -7/1 = -7