0.15-0.x=0.4(x+3)

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Solution for 0.15-0.x=0.4(x+3) equation: 



0.15-0.x=0.4(x+3)

We move all terms to the left:

0.15-0.x-(0.4(x+3))=0

We add all the numbers together, and all the variables

-(0.4(x+3))+0.15=0



We calculate terms in parentheses: -(0.4(x+3)), so:

0.4(x+3)

We multiply parentheses

0.4x+1.2

Back to the equation:

-(0.4x+1.2)



We get rid of parentheses

-0.4x-1.2+0.15=0

We add all the numbers together, and all the variables

-0.4x-1.05=0

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

-0.4x=1.05

x=1.05/-0.4

x=-2+0.25/0.4

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