7(1-7r)+8r=-157

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Solution for 7(1-7r)+8r=-157 equation: 



7(1-7r)+8r=-157

We move all terms to the left:

7(1-7r)+8r-(-157)=0

We add all the numbers together, and all the variables

7(-7r+1)+8r-(-157)=0

We add all the numbers together, and all the variables

8r+7(-7r+1)+157=0

We multiply parentheses

8r-49r+7+157=0

We add all the numbers together, and all the variables

-41r+164=0

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

-41r=-164

r=-164/-41

r=+4

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