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Matrix inversion help please

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    Hi guys im really struggling with quantitative methods for finance and need some help!

    two equations
    ax2/bx1 = p1/p2
    p1x1 + p2x2 = I

    they can be written using matrix algebra as ax=b where x = (x1)
    (x2)

    Find a and b and solve for x using matrix inversion
 
 
 
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