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(((3•x-1)•2-6):2)-4=6
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{[(3x-1)×2-6]:2}-4 = 6
[(3x-1)×2-6]:2 = 6+4
(3x-1)×2-6 = 10×2
(3x-1)×2 = 20+6
(3x-1)×2 = 26
3x-1 = 26:2
3x = 13+1
3x = 14
x = 14/3
x = 4,(6)