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