Question

Хелпппп, пжжжж!!!!!!! ​

Answer 1

$\dfrac{x^{2}-18x+80 }{5x-50}=\dfrac{(x-10)(x-8)}{5(x-10)}=\dfrac{x-8}{5} \\\\x=8,5\\\\\dfrac{x-8}{5}=\dfrac{8,5-8}{5}=\dfrac{0,5}{5}=\boxed{0,1}$