18-3r=30-4r

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Solution for 18-3r=30-4r equation:


18-3r=30-4r

We simplify the equation to the form, which is simple to understand 
18-3r=30-4r

We move all terms containing r to the left and all other terms to the right. 
-3r+4r=+30-18

We simplify left and right side of the equation. 
+1r=+12

We divide both sides of the equation by 1 to get r. 
r=12

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