-4-9r-7+8r=

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Solution for -4-9r-7+8r= equation:


-4-9r-7+8r=0

We simplify the equation to the form, which is simple to understand 
-4-9r-7+8r=0

We move all terms containing r to the left and all other terms to the right. 
-9r+8r=0+4+7

We simplify left and right side of the equation. 
-1r=+11

We divide both sides of the equation by -1 to get r. 
r=-11

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