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x in (-oo:+oo)
-((7/8)*x)-6 = -((3/8)*x)-14 // + -((3/8)*x)-14
(3/8)*x-((7/8)*x)-6+14 = 0
(-7/8)*x+(3/8)*x-6+14 = 0
8-1/2*x = 0 // - 8
-1/2*x = -8 // : -1/2
x = -8/(-1/2)
x = 16
x = 16
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