Question

х=-7 х+40/х-10 срочноооо

Answer 1

х=-7 х+40/х-10 ; x+7x-40/1x=-10; -32x=-10; x=10/32; x=5/16

Answer 2

$x= \frac{-7x+40}{x-10} = \\ x(x-10)=-7x+40 \\ x^2-10x=-7x+40 \\ x^2-10x+7x-40=0 \\ x^2-3x-40=0 \\ D = 9-4*1*-40 = 169 \\ x_1,x_2= \frac{3+-13}{2} \\ x_1 = -5 ; x_2 = 8$