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2010-04-14T10:38:35+02:00
2(3x-6)-(7y-4y)= 6x-12-7y+4y=6x-12-3y
na 100% dobrze :0 pozdro :]
2010-04-14T10:43:34+02:00
2(3x-6)-(7y-4y)=
6x-12-7y+4y=
6x-12-3y
2010-04-14T11:24:27+02:00
2(3x - 6) - (7y - 4y) = 6x -12 - 7y + 4y = 6x - 12 - 3y