7(-10x+9)=7(-7x-3)

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Solution for 7(-10x+9)=7(-7x-3) equation: 



7(-10x+9)=7(-7x-3)

We move all terms to the left:

7(-10x+9)-(7(-7x-3))=0

We multiply parentheses

-70x-(7(-7x-3))+63=0



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

7(-7x-3)

We multiply parentheses

-49x-21

Back to the equation:

-(-49x-21)



We get rid of parentheses

-70x+49x+21+63=0

We add all the numbers together, and all the variables

-21x+84=0

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

-21x=-84

x=-84/-21

x=+4

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