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x=9
b) -1/3x=-5
x=15
c)3/4x=-4/9
x=-16/27
d) 0,1x=-7
x=-70
x=9
b)-1/3x=-5 I*(-3)
x=15
c) 3/4x=4/9 skracasz na krzyż
x=3
d)0,1x=-7 I*10
x=-70
x=9
b ) -1/3 x = - 5 /*3
-x=-15 /*(-1)
x=15
c ) 3/4x = -3/9 /*36
27x= -12 /:27
x= 0,45 ok.
d ) 0,1 x = -7 /10
x=-70
Mam nadzieje, że pomogłam
Pozdrawiam:-)!!!