-2(-5-4x)=-1(x-4)

Solution for -2(-5-4x)=-1(x-4) equation:

-2(-5-4x)=-1(x-4)

We simplify the equation to the form, which is simple to understand 
-2(-5-4x)=-1(x-4)

Reorder the terms in parentheses
+(+10+8x)=-1*(x-4)

Remove unnecessary parentheses
+10+8x=-1+*(+x-4+)

Reorder the terms in parentheses
+10+8x=+(-1x+4)

Remove unnecessary parentheses
+10+8x=-1x+4

We move all terms containing x to the left and all other terms to the right. 
+8x+1x=+4-10

We simplify left and right side of the equation. 
+9x=-6

We divide both sides of the equation by 9 to get x. 
x=-0.666666666667