Hi,
So, first you want to open up the parenthesis and use distributive property:
- 4*x-4*1+8*5-8*x=0 Reminder: remember that if you have minus outside of the parenthesis, then when you open up the parenthesis the signs change-so positive becomes negative. Here it is +8 so the signs stay the same.
4x-4+40-8x=0 Now you want to combine like terms,
4x-8x-4+40=0
-4x-36=0 Now you want to get -4x by itself, by moving 36 to the other side of the equal sign. This means you need to add 36 to both sides, so on the left -36 +36=0, so therefore -4x is now alone.
-4x-36=0
+36 +36
--------------------------
-4x=36 Now you need to get x alone, since -4*x, then you want to get rid of -4 by dividing both sides by -4
x=-9
I hope this helps!
