October 2018 2 15 Report

1.Wykonaj działanie

a 3(x-5)+ 2 (3- 2x)

b 6z - (5z+8)

c (3x-2y) - (3x-4y)

d 10x-6 - (5x + 4 )

2 . Rozwiąż równania

a 6x+8 = 4x +20

b y+6 + 2y - 4= 14

c 2(x + 20 ) + 2x = 48

d 3z - 5 = 6 - ( 2z - 4 )

3. ile rozwiazań ma równanie

a 0x=0

b 0y=2

c 2z= 0

d x 2 do kwadratu = 25

e 2x+3=2x + 5


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