October 2018 1 11 Report

zadanie 12 , 162,1 gimnazjum(podręcznik;matematyka z plusem)

b) 3(z-y)-a(z-y)

c) (m-1)(k-1)+(k-1)(m+1)

d) (a-1)(b+c)-(a-1)(b-c)

Zadanie 31.uprość podane wyrażenia

a) 3x-6

------- - 5

3

b) 3a-9b 2a-4b

-------- - -------

3 2

c) 2x+6 6x-9

------ - ------

2 3

x-7 x-1

d) 4 razy ------ + 9 razy ----

2 3


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