Question

−px+r=−8x−2 solve for x

Answer 1

Answer:

$x=- \frac{2+r}{8-p}$

Step-by-step explanation:

Step 1: Put all terms with the variable x in the same side of the equation (-px and -8x):

In order to do this, we have to move the -8x from the right side to the left side of the equation, changing its sign. The other term without variable x (r) must be moved to the right side, applying the same rule (changing its sign)

$-px+r=-8x -2\\8x-px=-2-r$

Step 2: Factorise both sides of the equation, taking out the common terms:

In the left side, the common term is the variable x; and the common term in the right side is the minus sign:

$x(8-p)=-(2+r)$

Step 3: Finally, isolate x:

$x= - \frac{2+r}{8-p}$

Answer 2

-px+r = -8x-2
-px + 8x = -2 - r
x (8 - p) = -2 - r
x = (-2 - r) / (8 - p)