August 2018 1 9 Report
Trochę z algebry :

1) -3*(-6)*a*b*b=18ab
2) -xf) -4a-6ab
3) 3x-y+1-x-y+y-x=x-y+1
4) 2ab+a+3-3-3ab+a-3=-ab+2a
5) abc-(abc-(xyz-xyz+abc))=abc-(abc+xyz+xyz-abc)=abc-abc-xyz-xyz+abc=abc-2xyz
6) 6x-24-2=6x-26
7) 5x-5y-5-4x-8=x-5y-13
8) 5a²-15a-3a²+15a=21²

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