paigeby04
paigeby04 paigeby04
  • 21-03-2018
  • Mathematics
contestada

How do you solve: -1+7n>-4(-7n-5)
Having problems on the first step..
Thanks for your help!!

Respuesta :

LAGRHA15 LAGRHA15
  • 21-03-2018
    -1 + 7n > -4(-7n - 5) 
   - 1 + 7n > 28n + 20 
        - 28n - 28n
---------------------------------
    -1 - 21n > 20 
  + 1            +  1
---------------------------
     -21n > 21
    -------- -------
     -21      -21
    
         n > -1

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