3r+r-4=9

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Solution for 3r+r-4=9 equation:


3r+r-4=9

We simplify the equation to the form, which is simple to understand 
3r+r-4=9

We move all terms containing r to the left and all other terms to the right. 
+3r+1r=+9+4

We simplify left and right side of the equation. 
+4r=+13

We divide both sides of the equation by 4 to get r. 
r=3.25

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