Yes, to me it appears that this is no more than what you've already put down.
Sometimes the problems are intriguingly simple.
Write down the system of equations of when and a_{ij} = i + j for , , , , while b_{j} = j = 1, ,
Answer is:
2x_{1} + 3x_{2} + 4x_{3} = 1
3x1 + 4x_{2} + 5x_{3} = 2
4x_{1} + 5x_{2} + 6x_{3} = 3
Seems like an easy question but not really sure on what they're asking so any clarification will greatly help. Thanks!