Odpowiedzi

2010-03-09T16:46:02+01:00
A) 8x-4 :4 -(-3x+1)=
8x-1-(-3x+1)=
8x-1+3x+1=
5x

b) 27a - 9b : 3ab =
27a-9:3a=
27a-3/a=
3(9a-1/a)
2010-03-09T16:54:17+01:00
A) 8x-4 :4 -(-3x+1) = 4(2x - 1):4 - (-3x + 1) = 2x - 1 + 3x - 1 = 5x - 2
b) 27a - 9b : 3ab = 9(3a - b):3ab = 3(3a - b):ab
2010-03-09T17:25:58+01:00
A)
8x - 4 : 4 - (- 3x + 1) = 8x - 1 + 3x - 1 = 11x - 2
b)
27a - 9b : 3ab = 9(3a - b) : 3ab = 3(3a - b) : ab