October 2018 2 89 Report

Zapisz w prostszej postaci:

a)
3x+4x+ ...........
6x-x=..........
-8x+5x=..........
x-4x+...........

b)
2a+1+a= ...........
4a-5a-3=............
-5a+7b+6a= ...........
6b-6a+2b

c)
5*7y= ........
12y:6=.........
(-8y)* 1/2 =...........
10a:(-2)=


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