12+.3x=30(.4+x)

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Solution for 12+.3x=30(.4+x) equation: 



12+.3x=30(.4+x)

We move all terms to the left:

12+.3x-(30(.4+x))=0

We add all the numbers together, and all the variables

.3x-(30(x+0.4))+12=0



We calculate terms in parentheses: -(30(x+0.4)), so:

30(x+0.4)

We multiply parentheses

30x+12

Back to the equation:

-(30x+12)



We get rid of parentheses

.3x-30x-12+12=0

We add all the numbers together, and all the variables

-29.7x=0

x=0/-29.7

x=0

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