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9x – 5 < –41 or 3x + 13 > 7

Sagot :

9x - 5 < -41
    +5      +5
9x < -36
x < -4

3x + 13 > 7
       -13   -13
3x      > -6
x > -2

x < -4 OR x >2
9x-5<-41                  or          3x+13>7
9x-5+5<-41+5                        3x+13-13>7-13 
9x/9<-36/9                             3x/3>-6 /3 
x<-4                                      x>-2