3r-12=8-2r

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Solution for 3r-12=8-2r equation:


3r-12=8-2r

We simplify the equation to the form, which is simple to understand 
3r-12=8-2r

We move all terms containing r to the left and all other terms to the right. 
+3r+2r=+8+12

We simplify left and right side of the equation. 
+5r=+20

We divide both sides of the equation by 5 to get r. 
r=4

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