(0.3x-4=0.7x+8)

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Solution for (0.3x-4=0.7x+8) equation: 



(0.3x-4=0.7x+8)

We move all terms to the left:

(0.3x-4-(0.7x+8))=0



We calculate terms in parentheses: +(0.3x-4-(0.7x+8)), so:

0.3x-4-(0.7x+8)

determiningTheFunctionDomain
0.3x-(0.7x+8)-4

We get rid of parentheses

0.3x-0.7x-8-4

We add all the numbers together, and all the variables

-0.4x-12

Back to the equation:

+(-0.4x-12)



We get rid of parentheses

-0.4x-12=0

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

-0.4x=12

x=12/-0.4

x=-30

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