September 2018 2 9 Report

zapisz w postaci sumy

a)-(2+a)=

b) -(3-a)=

c)-(-4a-2b)=

d)-(-2r+3y)=

e) -(-3x+2y-4z)=

f)-(2x-3y+4z-5)=

plis zróbcie


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