Answer:
x = -40
Step-by-step explanation:
<u>Rewrite "(x - 4)/4" in a different way:</u>
⇒ 8 + x/2 = (x - 4)/4 - 1
⇒ 8 + x/2 = x/4 - 4/4 - 1
<u>Simplify the R.H.S:</u>
⇒ 8 + x/2 = x/4 - 1 - 1
⇒ 8 + x/2 = x/4 - 2
<u>Add 2 both sides and subtract x/2 both sides:</u>
⇒ 8 + x/2 = x/4 - 2
⇒ 8 + 2 = x/4 - x/2
⇒ 10 = x/4 - 2x/4
<u>Simplify the R.H.S:</u>
⇒ 10 = x/4 - 2x/4
⇒ 10 = -x/4
<u>Use cross multiplication:</u>
⇒ 10 × 4 = -x
⇒ -(40) = x = -40
Answer:
The answer is 36.20 :)
Step-by-step explanation:
Answer:
<u>x= -7 , y= 9</u>
Steps:
4x+3y=-1
5x+4y=1
First, multiply the top equations by -5, and the bottom by 4 to get :
-20x-15y=5
20x+16y=4
Then, you’re going to add the two equations with them being on top of each other so you can easily see what cancels out :
-20x-15y=5
+ 20x+16y=4
———————
0+1y=9
From this, you get :
y=9
Now that you have one variable, find x by substituting 9 for y in one of the equations, I choose :
4x+3y=-1
So :
4x+3(9)=-1
Then simplify by multiplying 3 and 9 :
4x+27=-1
Then subtract 27 on each side :
4x=-28
Then, divide by 4 to get that :
x= -7
Hope this helps!!
