What is the solution to the following system?
x+y+z= 6
{x-y+z= 8
(x+y-z- 0
o (3,-1, 4)
o (4, 1, 3)
o (4, -1,3)
o (3, 1, 4)

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

The ratio of rock songs to dance songs on jonathan’s mp3 player is 5: 6. the total number of rock and dance songs jonathan has is between 101 120. how many rock songs does he have?

Which part of a 2-column proof is the hypothesis of the conjecture? a) given b) reasons c) prove d) statements ! i think it's b but i'm not quite