Dalia,

It's not possible to do this by hand for three variables unless you have three equations. However, if you use Excel Solver you eventually get:

x1=-.42

x2=-.87

x3=-1.07

Be sure to unset the constraint for nonnegative integers! Your constraints are that the sum of the combinations are equal to 3 and -8 respectively and your target cell is either one of the sum of the combinations. Do send a snapshot of your Excel solver setup if you have questions.

Hope that helps,

Deanna

Dalia S.

how did you get those answers as a solution?

Report

09/21/14

Phillip R.

09/18/14