10(r-7)=100

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Solution for 10(r-7)=100 equation: 



10(r-7)=100

We move all terms to the left:

10(r-7)-(100)=0

We multiply parentheses

10r-70-100=0

We add all the numbers together, and all the variables

10r-170=0

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

10r=170

r=170/10

r=17

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