-8(5r+5)=-320

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Solution for -8(5r+5)=-320 equation: 



-8(5r+5)=-320

We move all terms to the left:

-8(5r+5)-(-320)=0

We add all the numbers together, and all the variables

-8(5r+5)+320=0

We multiply parentheses

-40r-40+320=0

We add all the numbers together, and all the variables

-40r+280=0

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

-40r=-280

r=-280/-40

r=+7

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