Distribute −1: Distribute −1 across the parentheses in the inequality −1(r−13)≥3. −1×r+−1×(−13)≥3 −r+13≥3
Isolate variable term: Isolate the variable term by subtracting 13 from both sides of the inequality.−r+13−13≥3−13−r≥−10
Divide by −1: Divide both sides by −1 to solve for r. Remember that dividing by a negative number reverses the inequality sign.−1−r≤−1−10r≤10
Check solution: Check the solution by substituting the value back into the original inequality to ensure it makes the inequality true.−1(10−13)≥3−1(−3)≥33≥3This is true, so there is no math error.
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