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Calculati "a" : (47+7):a=28:4+42:6-35-7

Răspuns :

(47+7):a=28:4+42:6-35-7
54:a=7+7-35-7
54:a=7-35
54:a=-28
a=-28*54
a=-1512
54:a=7+7-42
54:a=14-42
54:a=-28
a=54/28