Add 1 to isolate variable: Add 1 to both sides of the equation to isolate the term with the variable r. Starting with the equation 2r−1=1, we add 1 to both sides to get: 2r−1+1=1+1 This simplifies to: 2r=2
Divide by 2 to solve: Divide both sides of the equation by 2 to solve for r. Now we have 2r=2, so we divide both sides by 2 to isolate r: 22r=22 This simplifies to: r=1
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