October 2018 1 8 Report

rozwiąż zadanie : a) 7a+3b+4c+5a-2b-8c= b) 2a-4b-5c-6a-3b+2c= c) 4a-2b+3-3a+6b-9= d) -4a+5b-7-2a-3b+3= e) 3x+5y-4x+5y+6x-3y= f) -(2a-3b+5)+4a-7b+3-(3a-2b-1)= g) (4a+2b-7)-(a-3b-4)-(2a-b-3)= h) -(-2a+5b-4)+(2a-3b-4)-(3a-b+2)= i) 2(3a-4b+c) -5(3a+b-2c)= j) 7(x+2y-3z)+4(2x-3y-5z)= k) -3(-2a-4b-c)-6(a-2b-6c)=

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