390=10(-7x-3)

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Solution for 390=10(-7x-3) equation: 



390=10(-7x-3)

We move all terms to the left:

390-(10(-7x-3))=0



We calculate terms in parentheses: -(10(-7x-3)), so:

10(-7x-3)

We multiply parentheses

-70x-30

Back to the equation:

-(-70x-30)



We get rid of parentheses

70x+30+390=0

We add all the numbers together, and all the variables

70x+420=0

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

70x=-420

x=-420/70

x=-6

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