(3r-4)=-2(4-7r)

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Solution for (3r-4)=-2(4-7r) equation: 



(3r-4)=-2(4-7r)

We move all terms to the left:

(3r-4)-(-2(4-7r))=0

We add all the numbers together, and all the variables

(3r-4)-(-2(-7r+4))=0

We get rid of parentheses

3r-(-2(-7r+4))-4=0



We calculate terms in parentheses: -(-2(-7r+4)), so:

-2(-7r+4)

We multiply parentheses

14r-8

Back to the equation:

-(14r-8)



We get rid of parentheses

3r-14r+8-4=0

We add all the numbers together, and all the variables

-11r+4=0

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

-11r=-4

r=-4/-11

r=4/11

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