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x in (-oo:+oo)
(3/8)*x+19 = (7/8)*x-5 // - (7/8)*x-5
(3/8)*x-((7/8)*x)+5+19 = 0
(3/8)*x+(-7/8)*x+5+19 = 0
24-1/2*x = 0 // - 24
-1/2*x = -24 // : -1/2
x = -24/(-1/2)
x = 48
x = 48
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