720=90+(9x-19)+111+(5x+8)+128+(7x+3)

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Solution for 720=90+(9x-19)+111+(5x+8)+128+(7x+3) equation: 



720=90+(9x-19)+111+(5x+8)+128+(7x+3)

We move all terms to the left:

720-(90+(9x-19)+111+(5x+8)+128+(7x+3))=0



We calculate terms in parentheses: -(90+(9x-19)+111+(5x+8)+128+(7x+3)), so:

90+(9x-19)+111+(5x+8)+128+(7x+3)

determiningTheFunctionDomain
(9x-19)+(5x+8)+(7x+3)+90+111+128

We add all the numbers together, and all the variables

(9x-19)+(5x+8)+(7x+3)+329

We get rid of parentheses

9x+5x+7x-19+8+3+329

We add all the numbers together, and all the variables

21x+321

Back to the equation:

-(21x+321)



We get rid of parentheses

-21x-321+720=0

We add all the numbers together, and all the variables

-21x+399=0

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

-21x=-399

x=-399/-21

x=+19

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