Answer;
-They commanded the armies.
-They supervised the business of government.
Step-by-step explanation;
Consul was a Roman magistrate, comparable with a prime minister or a president. Under the empire, the office was prestigious but unimportant.
As part of their executive functions, the consuls were responsible for carrying into effect the decrees of the Senate and the laws of the assemblies.
The consuls were the chairmen of the Senate, which served as a board of advisers. They also commanded the Roman army and exercised the highest juridical power in the Roman empire.