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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



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

2r-4(r+2)

We multiply parentheses

2r-4r-8

We add all the numbers together, and all the variables

-2r-8

Back to the equation:

-(-2r-8)



We get rid of parentheses

-3r+2r+8+7=0

We add all the numbers together, and all the variables

-1r+15=0

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

-r=-15

r=-15/-1

r=+15

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