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2(x+3)=2x+6
5(3x-1)=15x-5
(-4) x (2a-b)= -4x (2a-b) = -8ax +8bx
2. Wykonaj dzielenie :
a) (6x-2y) :2= (6x-2y) * 1/2 = 3x-y
b) (-3a - 1 1/2) : (-3)=(-3a - 3/2) * -1/3= a+ 1/2
5(3x-1)= 15x-5
(-4) x (2a-b)=-8a+4b
a) (6x-2y) :2=3x-y
b) (-3a - 1 1/2) : (-3)=a+(³/₂*(-⅓))=a-½
5(3x-1)=15x-5
(-4)x(2a-b)=-4x(2a-b)=-8xa+4xb
(6x-2y):2=3x-y
(-3a-1 1/2):(-3)=a+1/2
Myślę, że pomogłam ;)
Pozdrawiam.