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8910
8910 8910
  • 25-10-2014
  • Mathematics
Answered

Is 15f+9>5(5f+3) solvable? If so , what are the real numbers?

Verified Answer :

mariamikayla
mariamikayla mariamikayla
  • 25-10-2014

\(15f+9>5(5f+3) \\\\ 15f+9>25f+15 \\\\ 15f-25f>15-9 \\\\ -10f>6 \ |:(-2) \\\\ 5f < 3 \\\\ f<\frac{3}{5} \\\\ \boxed{f=(-\infty; \frac{3}{5})}\)

Answer Link
konrad509
konrad509 konrad509
  • 25-10-2014

\(15f+9>5(5f+3)\\ 15f+9>25f+15\\ 10f<-6\\ f<-\frac{6}{10}\\ f<-\frac{3}{5}\)

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