matematykaszkolna.pl
prosze o pomoc adamruda: [1−(1−2−1)−1]−1+[1+(1+2−1)−1]−1=
1 mar 12:28
Neko: [1+2−1]−1+[1+2−1]−1=2−1+2−1=0
1 mar 12:41
MonikaT: [1−1+2+1−1]−1+[1+1+2−1−1]−1= 2−1+2−1= 1+1=2
1 mar 15:20