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(1/6)*(2*x-7) = 4 // - 4
(1/6)*(2*x-7)-4 = 0
1/6*(2*x-7)-4 = 0
1/6*(2*x-7)-4 = 0
1/3*x-31/6 = 0
1/3*x-31/6 = 0
1/3*x-31/6 = 0 // + 31/6
1/3*x = 31/6 // : 1/3
x = 31/6/1/3
x = 31/2
x = 31/2
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