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Algebra
Pregunta

9. Stephano solved this inequality, but the soluti...

9. Stephano solved this inequality, but the solution does not work when he checked his answer. In which step ulu ire go wrong? Explain. 

\( - 4 s + 5 \leq 16 \) 

\( \frac { - 4 s + 5 } { - 4 } \geq \frac { 16 } { - 4 } \) 

\( s + 5 - 5 \geq - 4 - 5 \) 

\( s \geq - 9\) 

Answer

His mistake is in the second line

he didn't execute his division properly. \(\frac{- 4s+ 5}{- 4}\ne  s+ 5\)

Solución
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