-10r=9-9r

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Solution for -10r=9-9r equation:



-10r=9-9r
We move all terms to the left:
-10r-(9-9r)=0
We add all the numbers together, and all the variables
-10r-(-9r+9)=0
We get rid of parentheses
-10r+9r-9=0
We add all the numbers together, and all the variables
-1r-9=0
We move all terms containing r to the left, all other terms to the right
-r=9
r=9/-1
r=-9

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