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x in (-oo:+oo)
(1/6)*(2*x-9) = 7 // - 7
(1/6)*(2*x-9)-7 = 0
1/6*(2*x-9)-7 = 0
1/6*(2*x-9)-7 = 0
1/3*x-17/2 = 0
1/3*x-17/2 = 0
1/3*x-17/2 = 0 // + 17/2
1/3*x = 17/2 // : 1/3
x = 17/2/1/3
x = 51/2
x = 51/2
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