Answer :
(r -1 -2r) <= -2. Simplify.
r -2r <= -2 +1.
-r <= -1. Divide both sides by -1 and reverse the sign. Recall in inequality
when you multiply or divide by negative, the inequality sign is
reversed.
r >= -1/-1
r >= 1.
That's it.
r -2r <= -2 +1.
-r <= -1. Divide both sides by -1 and reverse the sign. Recall in inequality
when you multiply or divide by negative, the inequality sign is
reversed.
r >= -1/-1
r >= 1.
That's it.
