-4(r+2)+8=2(r-1)-7r+15

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Solution for -4(r+2)+8=2(r-1)-7r+15 equation: 



-4(r+2)+8=2(r-1)-7r+15

We move all terms to the left:

-4(r+2)+8-(2(r-1)-7r+15)=0

We multiply parentheses

-4r-(2(r-1)-7r+15)-8+8=0



We calculate terms in parentheses: -(2(r-1)-7r+15), so:

2(r-1)-7r+15

We add all the numbers together, and all the variables

-7r+2(r-1)+15

We multiply parentheses

-7r+2r-2+15

We add all the numbers together, and all the variables

-5r+13

Back to the equation:

-(-5r+13)



We add all the numbers together, and all the variables

-4r-(-5r+13)=0

We get rid of parentheses

-4r+5r-13=0

We add all the numbers together, and all the variables

r-13=0

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

r=13

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