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97- 3=94
B) 43=7+9
43-16=27
C) 17=11-12x/ -x
17-1=16
x=51
b) chyba źle napisałeś
c) -12x=17-11=6
-x=0.5 |:(-1)
x=o.5
D 3 ⅓= 0.5x | *2
6i 2/3= x
102=2x/:2
51=x
b) 43=7+9
43=16 sprzeczne
c) 17=11-12x
17-11=-12x
6=-12x/:-12
-0,5=x
d)x=5 i 1/3