Question

Помагите решит срочно надо 3мин

Answer 1

Ответ: x=-2.

Объяснение:

$\displaystyle\\\frac{2x+1}{x-1}=1\\\\\\\frac{2x+1}{x+1}-1=0\\\\\\\frac{2x+1-1*(x-1)}{x-1)}=0\\\\\\\frac{2x+1-x+1}{x-1} =0\\\\\\\frac{x+2}{x-1}=0\\\\\\\left \{ {{x+2=0} \atop {x-1\neq 0}} \right. \ \ \ \ \ \ \ \ \left \{ {{x=-2} \atop {x\neq 1}} .\right.$