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gunakan sifat kali silang
(3x+2)/2 = (x-4)/3
-------------------------- x 6
3(3x+2) = 2(x-4)
9x+6 = 2x-8
9x-2x = -8-6
7x = -14
x = -2
2x+1 = 2(-2)+1 = -3