Clear of fractions by multiplying both sides by -5
BUT, you must remember that the rules are:
1. When multiplying or dividing an inequality by a
POSITIVE number, you DO NOT reverse the direction
of the inequality.
2. When multiplying or dividing an inequality by a
NEGATIVE number, you MUST reverse the direction
of the inequality.
This is a case of multiplying an inequality by a
NEGATIVE number, so we must change the < to a >
If you are asked for interval notation, the
answer is:
(10,¥)
Edwin