3(-x-7)=3(2x-5)

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Solution for 3(-x-7)=3(2x-5) equation: 



3(-x-7)=3(2x-5)

We move all terms to the left:

3(-x-7)-(3(2x-5))=0

We add all the numbers together, and all the variables

3(-1x-7)-(3(2x-5))=0

We multiply parentheses

-3x-(3(2x-5))-21=0



We calculate terms in parentheses: -(3(2x-5)), so:

3(2x-5)

We multiply parentheses

6x-15

Back to the equation:

-(6x-15)



We get rid of parentheses

-3x-6x+15-21=0

We add all the numbers together, and all the variables

-9x-6=0

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

-9x=6

x=6/-9

x=-2/3

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