-2=(-7+r)/4

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



-2=(-7+r)/4

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply all the terms by the denominator


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



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

(r-7)-2*4

We add all the numbers together, and all the variables

(r-7)-8

We get rid of parentheses

r-7-8

We add all the numbers together, and all the variables

r-15

Back to the equation:

-(r-15)



We get rid of parentheses

-r+15=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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