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x in (-oo:+oo)
(1/5)*abs(10-(5*x)) = 0
(1/5)*abs(10-5*x) = 0
(1/5)*abs(10-5*x) = 0
x in (-oo:+oo)
abs(10-5*x)
10-5*x >= 0
10-5*x >= 0 // - 10
-5*x >= -10 // : -5
x <= -10/(-5)
x <= 2
x in (-oo:2>
(1/5)*(10-5*x) = 0
x in (2:+oo)
(1/5)*(-(10-5*x)) = 0
(1/5)*abs(10-5*x) = 0
/ | (1/5)*(10-5*x) = 0 i x in (-oo:2> | (1/5)*(-(10-5*x)) = 0 i x in (2:+oo)
x in (-oo:2>
(1/5)*(10-5*x) = 0
1/5*(10-5*x) = 0
10-5*x = 0 // - 10
-5*x = -10 // : -5
x = -10/(-5)
x = 2
x in (2:+oo)
(1/5)*(-(10-5*x)) = 0
1/5*(5*x-10) = 0
5*x-10 = 0 // + 10
5*x = 10 // : 5
x = 10/5
x = 2
(2:+oo)
x = 2
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