Plz help me solve

Question

f + 8 <3 and f +9>-4. What/how do I find the answer

Answer 1

f + 8 < 3          subtract 8 from both sides

f < -5

 

f + 9 > -4         subtract 9 from both sides

f > -13

 

f < -5 and f > -13        can be combined into one expression

-13 < f < -5

Answer 2

f + 8 <3 and f +9>-4

 

So we solve one at a time:

 

f + 8 <  3          

   - 8    -8

-------------

    f   < -5

 

f + 9 > -4 
   - 9    -9
-------------
      f > -13

f + 8 <  3          

   - 8    -8

-------------

    f   < -5