3r+12+2+4r-2=90

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Solution for 3r+12+2+4r-2=90 equation:


3r+12+2+4r-2=90

We simplify the equation to the form, which is simple to understand 
3r+12+2+4r-2=90

We move all terms containing r to the left and all other terms to the right. 
+3r+4r=+90-12-2+2

We simplify left and right side of the equation. 
+7r=+78

We divide both sides of the equation by 7 to get r. 
r=11.1428571429

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