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x in (-oo:+oo)
10-((1/4)*(8*x-12)) = (1/2)*(2*x-4) // - (1/2)*(2*x-4)
10-((1/4)*(8*x-12))-((1/2)*(2*x-4)) = 0
(-1/4)*(8*x-12)+(-1/2)*(2*x-4)+10 = 0
10-1/4*(8*x-12)-1/2*(2*x-4) = 0
10-1/4*(8*x-12)-1/2*(2*x-4) = 0
5-3*x+10 = 0
15-3*x = 0
15-3*x = 0
15-3*x = 0 // - 15
-3*x = -15 // : -3
x = -15/(-3)
x = 5
x = 5
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