20r-18r+r+4r-4r+2=11

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Solution for 20r-18r+r+4r-4r+2=11 equation:


20r-18r+r+4r-4r+2=11

We simplify the equation to the form, which is simple to understand 
20r-18r+r+4r-4r+2=11

We move all terms containing r to the left and all other terms to the right. 
+20r-18r+1r+4r-4r=+11-2

We simplify left and right side of the equation. 
+3r=+9

We divide both sides of the equation by 3 to get r. 
r=3

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