Question

18/х - 18/(х+3) = 0,5

Answer 1

$frac{18}{x} - frac{18}{x+3} = frac{1}{2} \ x neq 0 \ x neq -3 \ 36(x+3)-36x=x(x+3) \ x^2+3x-108=0 \ D=9+432=441 \ x_1= frac{-3-21}{2} =-12 \ x_1= frac{-3+21}{2} =9$
Ответ: 9 и -12