9(10r-7)-7=10r+5+5r

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Solution for 9(10r-7)-7=10r+5+5r equation: 



9(10r-7)-7=10r+5+5r

We move all terms to the left:

9(10r-7)-7-(10r+5+5r)=0

We add all the numbers together, and all the variables

9(10r-7)-(15r+5)-7=0

We multiply parentheses

90r-(15r+5)-63-7=0

We get rid of parentheses

90r-15r-5-63-7=0

We add all the numbers together, and all the variables

75r-75=0

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

75r=75

r=75/75

r=1

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