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x in (-oo:+oo)
(-7*x-18)/(-5) = 19 // - 19
(-7*x-18)/(-5)-19 = 0
(-7*x-18)/(-5)+(-19*(-5))/(-5) = 0
-7*x-19*(-5)-18 = 0
77-7*x = 0
(77-7*x)/(-5) = 0
(77-7*x)/(-5) = 0 // * -5
77-7*x = 0
77-7*x = 0 // - 77
-7*x = -77 // : -7
x = -77/(-7)
x = 11
x = 11
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