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3x>9
x>3
b)4x-5<17
4x<22
x<5,5
c) tu brakuje czegos po 12 cał. i 1/ <---przez co????
d) 10 - 5x ≤ -15
-5x ≤ -25
5x ≥ 25
x ≥ 5
e) - 2x + 1 <3
-2x < 2
x>-1
f) -2/3x + 4 >10
-2/3x >6
x<-9