September 2018 2 10 Report

wykonaj działania:

a)3x+x+

b)3a+5a=

c)8y-y=

d)10a-4a=

e)5x+(-7x)=

f)2a-6a=

g)-3b-4b=

h)3z+2z+7z=

i)9y+6y-2y=

j)5w-4w-2w=


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