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x=3
b) 5x=0
x=0
c) -10,8x=-5,4
x=1/2
d) 3x=6
x=2
e) -3x=-8
x=8/3=2 i 2/3
f) 13/3x+7/6x=-11
26/6x+7/6x=-11
33/6x=-11 razy 6, wiec
33x=-66 podzielic na 33
x=-2