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2 7 Y 4
( x ) = ( 3 6 )^-1 . ( 1 )
y 2 7 4
( x ) = 1/3.7-2.6 ( 7 -6 ) . ( 1 ) .
y -2 3 4
( x ) = 1/9 ( 7 -6 ) . ( 1 )
y -2 3 4
( x ) = 1/9 ( 7.1+(-6).4 )
y -2.1+3.4
( x ) = 1/9 ( -17 )
y 10
( x ) = ( -17/9 )
y 10/9
jadi x = -17/9 dan y = 10/9
2. ( 3 1 ) ( x ) = ( 6 )
4 3 y -3
( x ) = ( 3 1 )^-1 . ( 6 )
y 4 3 -3
( x ) = 1/3.3-1.4 ( 3 -1 ) . ( 6 ) .
y -4 3 -3
( x ) = 1/5 ( 3 -1 ) . ( 6 )
y -4 3 -3
( x ) = 1/5 ( 3.6+(-1).(-3) )
y -4.6+3.(-3)
( x ) = 1/5 ( 21 )
y -33
( x ) = ( 21/5 )
y -33/5
jadi x = 21/5 dan y = -33/5