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B 6(a-2b+3c)
b)6a-12b+18c=6*(a-2b+3c)
c)21x²+14y³=7*( 3x²+2y³)
d)-1,6a-0,8b-4,8c=0,8*(-2a-b-6c)
e)nie wiem
f)3¾a + 6¼b -1¼=¼*(19a+25b-5)
b)6(a-2b+3c)
c)7(3x²+2y³)
d)4(-0,4a-0,2b-2,4c)
e)nie mogłem tego rozczytać
f)15/4a+25/4b-5/4=5(3/4a+5/4b-1/4)