a)25-(25-x)=12+(42-65) b)5+/x+3/=9 c)31-(17+x)=18 d)x-(-25+x)=13-x e)15-(30+x)=x-(27-/-8/) f)(12x-4^3).8^3=4.8^4 g)[119-(3^3-10)].x=2448 h)[(10-x).2+51]:3-2=3

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