September 2018 1 19 Report

Wykonaj działania i oblicz wartość liczbową wyrażenia: 4(y-3)-3(x+1)= dla x=4,y=2 3(2b+1)-4(a-2)= dla a=7, b=1 9(x-7y)-(5y-2x)+20y= dla x=0,5, y=0,3 (5x+7y)-8(y+1)+3(x-y)= dla x=1/2 , y=1/4


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