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(1/4)*(8*x+16) = 8 // - 8
(1/4)*(8*x+16)-8 = 0
1/4*(8*x+16)-8 = 0
1/4*(8*x+16)-8 = 0
2*x-4 = 0
2*x-4 = 0
2*x-4 = 0 // + 4
2*x = 4 // : 2
x = 4/2
x = 2
x = 2
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