What year did Cleopatra become Coruler with PtolemyXII?

Cleopatra became co-ruler with her brother in 51 BC after the death of her father.

Cleopatra became co-ruler with her brother in 51 BC after the death of her father.

Cleopatra became co-ruler with her brother in 51 BC after the death of her father.

Cleopatra became co-ruler with her brother in 51 BC after the death of her father.

Cleopatra became co-ruler with her brother in 51 BC after the death of her father.

Cleopatra became co-ruler with her brother in 51 BC after the death of her father.

Cleopatra became co-ruler with her brother in 51 BC after the death of her father.

Cleopatra became co-ruler with her brother in 51 BC after the death of her father.

Cleopatra became co-ruler with her brother in 51 BC after the death of her father.