3x+6=0.4(5x+15)

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Solution for 3x+6=0.4(5x+15) equation: 



3x+6=0.4(5x+15)

We move all terms to the left:

3x+6-(0.4(5x+15))=0



We calculate terms in parentheses: -(0.4(5x+15)), so:

0.4(5x+15)

We multiply parentheses

2x+6

Back to the equation:

-(2x+6)



We get rid of parentheses

3x-2x-6+6=0

We add all the numbers together, and all the variables

x=0

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