October 2018 1 19 Report

Matematyka

Zad.1

Zredukuj wyrazy podobne i oblicz wartość wyrażenia :

a) -6x-5+2x-4+x dla x=4

b) 6,1-7y-4+6y dla y= -3,7

c) -9x-2y+7x-4-y dla x=-0,6 i y=12

d) 1/2a-4b+2 1/2a+3,5b-2 dla a=1/3 i b=7

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