-3-(9r-9)=-7(3r+6)

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Solution for -3-(9r-9)=-7(3r+6) equation:


-3-(9r-9)=-7(3r+6)

We simplify the equation to the form, which is simple to understand 
-3-(9r-9)=-7(3r+6)

Remove unnecessary parentheses
-3-9r+9=-7*(3r+6)

Reorder the terms in parentheses
-3-9r+9=+(-21r-42)

Remove unnecessary parentheses
-3-9r+9=-21r-42

We move all terms containing r to the left and all other terms to the right. 
-9r+21r=-42+3-9

We simplify left and right side of the equation. 
+12r=-48

We divide both sides of the equation by 12 to get r. 
r=-4

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