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|5-4x|=|2x+13|
Kasus 1
5-4x=2x+13
6x=-8
x=-4/3
Kasus 2
5-4x=-(2x+13)
2x=18
x=9
2.
|(3x+2)/(x-4)|=2
Kasus 1
(3x+2)/(x-4)=2
3x+2=2(x-4)
x=-10
Kasus 2
(3x+2)/(x-4)=-2
3x+2=-2(x-4)
5x=6
x=6/5