4(1-x)-x=9

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Solution for 4(1-x)-x=9 equation: 



4(1-x)-x=9

We move all terms to the left:

4(1-x)-x-(9)=0

We add all the numbers together, and all the variables

4(-1x+1)-x-9=0

We add all the numbers together, and all the variables

-1x+4(-1x+1)-9=0

We multiply parentheses

-1x-4x+4-9=0

We add all the numbers together, and all the variables

-5x-5=0

We move all terms containing x to the left, all other terms to the right

-5x=5

x=5/-5

x=-1

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