7(r+7)+8(4r+7)=7r-3r

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Solution for 7(r+7)+8(4r+7)=7r-3r equation: 



7(r+7)+8(4r+7)=7r-3r

We move all terms to the left:

7(r+7)+8(4r+7)-(7r-3r)=0

We add all the numbers together, and all the variables

7(r+7)+8(4r+7)-(+4r)=0

We multiply parentheses

7r+32r-(+4r)+49+56=0

We get rid of parentheses

7r+32r-4r+49+56=0

We add all the numbers together, and all the variables

35r+105=0

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

35r=-105

r=-105/35

r=-3

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