1+2r=-8+7+8r-7r

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Solution for 1+2r=-8+7+8r-7r equation:


1+2r=-8+7+8r-7r

We simplify the equation to the form, which is simple to understand 
1+2r=-8+7+8r-7r

We move all terms containing r to the left and all other terms to the right. 
+2r-8r+7r=-8+7-1

We simplify left and right side of the equation. 
+1r=-2

We divide both sides of the equation by 1 to get r. 
r=-2

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