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3/2x +1 = 1/3x -4/3
3/2x -1/3x = -4/3 -1
9/6x -2/6x = -7/3
7/6x = -7/3
x = -7/3 . 6/7
x = -42/21
x = -2
Maka, nilai :
2x +1
= 2(-2) +1
= -4 +1
= -3
Jadi, jawabannya adalah b.
supaya hilang per nya jadi,
6/2 ( 3x + 2) = 6/3 (x -4 )
3 (3x + 2 ) = 2 (x - 4 )
9x + 6 = 2x - 8
9x- 2x = -8-6
7x = -14
x = -14/7
x = - 2
-- NIlai 2x + 1 =
= 2(- 2) + 1
=-4 + 1
= - 3