SOLUTION: –18 – 6n – 4 < 17 + 1 + 2n

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Question 719300: –18 – 6n – 4 < 17 + 1 + 2n
Answer by checkley79(3341) About Me  (Show Source):
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–18 – 6n – 4 < 17 + 1 + 2n
-6n-2n<17+1+18+4
-8n<40
n>40/-8 note the sign change when dividing by a negative value.
n>-5 ans.
Proof:
Let n=-4.9
-18-6*-4.9-4<17+1+2*-4.9
-18+29.4-4<17+1-9.8
7.4<8.4