3x+0.4=0.8(0,5-2x)

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Solution for 3x+0.4=0.8(0,5-2x) equation: 



3x+0.4=0.8(0.5-2x)

We move all terms to the left:

3x+0.4-(0.8(0.5-2x))=0

We add all the numbers together, and all the variables

3x-(0.8(-2x+0.5))+0.4=0



We calculate terms in parentheses: -(0.8(-2x+0.5)), so:

0.8(-2x+0.5)

We multiply parentheses

-1.6x+0.4

Back to the equation:

-(-1.6x+0.4)



We get rid of parentheses

3x+1.6x-0.4+0.4=0

We add all the numbers together, and all the variables

4.6x=0

x=0/4.6

x=0

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