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Va rog exercitiul 2..repede dau coroana + 10 p
2 .rezolvati in Z ecuatiile:
7+x=5 y+11=18
3+t=-12 -3+u=-12
-5+x=11 y+1=-1
3×z=-21 40=(-8)×t
|-5|×u=|-60| v:(-9)=4
x:(-9)=4 |-3|=y:|-11|
-90:z=-18 t:t=1;tnu e 0