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(1/2)*(x-4) = (3/4)*(2*x-7) // - (3/4)*(2*x-7)
(1/2)*(x-4)-((3/4)*(2*x-7)) = 0
(1/2)*(x-4)+(-3/4)*(2*x-7) = 0
1/2*(x-4)-3/4*(2*x-7) = 0
1/2*(x-4)-3/4*(2*x-7) = 0
13/4-x = 0
13/4-x = 0
13/4-x = 0 // - 13/4
-x = -13/4 // * -1
x = 13/4
x = 13/4
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