Question

Помогите пожалуйста решите уравнение срочно надо
1)x^2/x-1=x2/1-x

2)4x+3/y-7=y^2/7-y

3) x/x+10 = 1/x-8

4)1/3x-1 =x/27-x

Answer 1

$1) x^{2} /(x-1)= x^{2} /(1-x) textless = textgreater - x^{2} /(1-x)= x^{2} /(1-x), = textgreater x=0$
$2) 4x+3/y-7= y^{2} /7-y textless = textgreater x=( y^{3}-7y^{2} -3)/24y$
$3) frac{x}{x} +10= frac{1}{x} -8 = textgreater frac{1}{x}=19 = textgreater x= frac{1}{19}$
$4) frac{1}{3}x-1= frac{x}{27}-x = textgreater frac{1}{3}x- frac{28}{27}x=1 = textgreater x=-1,5$