-7(9-7r)=7(9+5r)

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Solution for -7(9-7r)=7(9+5r) equation: 



-7(9-7r)=7(9+5r)

We move all terms to the left:

-7(9-7r)-(7(9+5r))=0

We add all the numbers together, and all the variables

-7(-7r+9)-(7(5r+9))=0

We multiply parentheses

49r-(7(5r+9))-63=0



We calculate terms in parentheses: -(7(5r+9)), so:

7(5r+9)

We multiply parentheses

35r+63

Back to the equation:

-(35r+63)



We get rid of parentheses

49r-35r-63-63=0

We add all the numbers together, and all the variables

14r-126=0

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

14r=126

r=126/14

r=9

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