October 2018 2 19 Report

uprość wyrażenia algebraiczne a)-7+3y+9+2y= b)x-3x+2-2x-7= c)-5x+4y-y-7x-9y= d)4x+5-x-4+x-3x= e)0,5a-2a+9-0,5a-11,5= f)-14k+9k-13+k+3+4k= g)-3k++2m+5m-77+k-m= h)2x-4+3x-2 i)x-3y-2x+6y j)2y-5-3y-4-8y


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