The sum of two numbers is 39. their difference is 15. what are the two numbers

Substitute x = 27 into:
x + y = 39
27 + y = 39
y = 39 - 27
y = 12                                                                                     
the answer is x=27 y=12

The answer is 7 and 22 because they are 15 part and add up to 29 and are 15 apart

The academic affairs council is the highest expert body processing academic affairs, as stipulated by the university statutes. specialist aaro häkkinen (educational policy) took part in the council’s meeting. the agenda of the meeting included bachelors’ feedback, the timing of pedagogical studies, the grant system for tuition fees, the standardisation of administrative practices for internships and the situation of foreign-language and multilingual master’s programmes.