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x in (-oo:+oo)
5*x-10 = 45/2 // - 45/2
5*x-(45/2)-10 = 0
5*x-45/2-10 = 0
5*x-65/2 = 0 // + 65/2
5*x = 65/2 // : 5
x = 65/2/5
x = 13/2
x = 13/2
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