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Calculeaza, respectand ordinea efectuarii operatiilor
a) 25+97-72
46-19+55
185-82+39

b)72:8x56
9x4+36
28:4+15


Răspuns :

a.
122-72=50
27+55=82
103+39=142
b.
9*56=504
36+36=72
7+15=22
25+97-72=122-72=50
46-19+55=27+55=82
185-82+39=103+142


72:8x56=9x56=504
9x4+36=36+36=72
28:4+15=7+15=22