-hx + 4 = 2x- 1 solve this equation for x.

x=-5/(-h-2)

Step-by-step explanation:

-hx+4=2x-1

-hx=2x-5

-hx-2x=-5

x(-h-2)=-5

x=-5/(-h-2)

Let me know if this helps!

1/4 because there is 4 grades.

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.