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