2r-7=(-1)

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Solution for 2r-7=(-1) equation:


2r-7=(-1)

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

Remove unnecessary parentheses
2r-7=-1

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

We simplify left and right side of the equation. 
+2r=+6

We divide both sides of the equation by 2 to get r. 
r=3

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