12+4r=4r-3(1-r)

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Solution for 12+4r=4r-3(1-r) equation:


12+4r=4r-3(1-r)

We simplify the equation to the form, which is simple to understand 
12+4r=4r-3(1-r)

Reorder the terms in parentheses
12+4r=4r+(-3+3r)

Remove unnecessary parentheses
+12+4r=+4r-3+3r

We move all terms containing r to the left and all other terms to the right. 
+4r-4r-3r=-3-12

We simplify left and right side of the equation. 
-3r=-15

We divide both sides of the equation by -3 to get r. 
r=5

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