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calculează respectând ordinea efectuării operațiilor:
8×9+7×7
7×9-4×8
4×2×6+63:7:3
45:5×6-42:6:7
200-9×9+8×7
157+72:8-6×8


Răspuns :

8×9+7×7=

72+49=121

7×9-4×8=

63-32=31

4×2×6+63:7:3=

48+3=51

45:5×6-42:6:7=

9×6-1=

54-1=53

200-9×9+8×7=

200-81+56=

119+56=175

157+72:8-6×8=

157+9-48=

166-48=118

72+49=121

63-32=31

8×6+3=48+3
=51

9×6-1=54-1
=53

200-81+56=119+56
=175

157+9-48=166-48
=118