-4(-5r+7)=-228

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Solution for -4(-5r+7)=-228 equation: 



-4(-5r+7)=-228

We move all terms to the left:

-4(-5r+7)-(-228)=0

We add all the numbers together, and all the variables

-4(-5r+7)+228=0

We multiply parentheses

20r-28+228=0

We add all the numbers together, and all the variables

20r+200=0

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

20r=-200

r=-200/20

r=-10

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