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I'm hoping someone can please help me with this. I'm sure it's quite simple, but I can't get my head around it.

Essentially I need to get:

(2,3) and (3,1) to equal (1,4).

The numbers in each bracket form pay off scenarios for different securities. I need to find out how to get what amount of (2,3) and (3,1) (can be added or subtracted) will equal (1,4).

i.e. assume (2,3) is x and (3,1) is y

2x + 0.5y = (1,4)

Obviously this is incorrect, but it helps to give a picture of what I need to work out.

I'm actually stumped (I've never been good at this). Every time I try using guess and check I can get one side to work out, but not the other.

Hopefully somebody can please help me understand!