3=0.20(4x-20)

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Solution for 3=0.20(4x-20) equation: 



3=0.20(4x-20)

We move all terms to the left:

3-(0.20(4x-20))=0



We calculate terms in parentheses: -(0.20(4x-20)), so:

0.20(4x-20)

We multiply parentheses

0.8x-4

Back to the equation:

-(0.8x-4)



We get rid of parentheses

-0.8x+4+3=0

We add all the numbers together, and all the variables

-0.8x+7=0

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

-0.8x=-7

x=-7/-0.8

x=8+0.6/0.8

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