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calculeaza 25x2:5x0 17x(2+8)-28:2 450-50:10x2 7-7:7+7x7

Răspuns :

25x2:5x0=0 
17x(2+8)-28:=142
450-50:10x2=80
7-7:7+7x7=55
25x2:5x0=
50:5x0
10x0=0

17x(2+8)-28:2=
17x10-28:2
170-14=156

450-50:10x2=
450-5x2
450-10=440

7-7:7+7x7=
7-1+49
6+49=55