4=(-2a+4a)(-2+0)

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Solution for 4=(-2a+4a)(-2+0) equation: 



4=(-2a+4a)(-2+0)

We move all terms to the left:

4-((-2a+4a)(-2+0))=0

We add all the numbers together, and all the variables

-((+2a)(-2))+4=0

We multiply parentheses ..

-((-4a))+4=0



We calculate terms in parentheses: -((-4a)), so:

(-4a)

We get rid of parentheses

-4a

Back to the equation:

-(-4a)



We get rid of parentheses

4a+4=0

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

4a=-4

a=-4/4

a=-1

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