(8-2x)(-4)=40

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Solution for (8-2x)(-4)=40 equation: 



(8-2x)(-4)=40

We move all terms to the left:

(8-2x)(-4)-(40)=0

We add all the numbers together, and all the variables

(-2x+8)(-4)-40=0

We multiply parentheses ..

(+8x-32)-40=0

We add all the numbers together, and all the variables

(8x-32)-40=0

We get rid of parentheses

8x-32-40=0

We add all the numbers together, and all the variables

8x-72=0

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

8x=72

x=72/8

x=9

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