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(1/3)*(8*x-16) = 12 // - 12
(1/3)*(8*x-16)-12 = 0
1/3*(8*x-16)-12 = 0
1/3*(8*x-16)-12 = 0
8/3*x-52/3 = 0
8/3*x-52/3 = 0
8/3*x-52/3 = 0 // + 52/3
8/3*x = 52/3 // : 8/3
x = 52/3/8/3
x = 13/2
x = 13/2
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