19=0.1(x-400)+7

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Solution for 19=0.1(x-400)+7 equation: 



19=0.1(x-400)+7

We move all terms to the left:

19-(0.1(x-400)+7)=0



We calculate terms in parentheses: -(0.1(x-400)+7), so:

0.1(x-400)+7

We multiply parentheses

0.1x-40+7

We add all the numbers together, and all the variables

0.1x-33

Back to the equation:

-(0.1x-33)



We get rid of parentheses

-0.1x+33+19=0

We add all the numbers together, and all the variables

-0.1x+52=0

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

-0.1x=-52

x=-52/-0.1

x=+520

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