Wyrażenia algebraiczne . :
a ) -5x razy x = 15
x = ...
b) x+4,5 = 10
x = ...
c) x : (-5) = 5
x = ...
d) x-5,5= -5
x = ...
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b) x+4,5=10 /-4,5
x=5,5
c) x:(-5)=5 /x(-5)
x=-25
d)x-5,5=-5 /+5,5
x=0,5
a) nie wiem