Solve 4 (×-1 ) +8 (5-×)=0

Answer 1

Hi,

So, first you want to open up the parenthesis and use distributive property:

1. 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

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-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!