Question 1104631
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I hope the way you are being taught says that, before you can have a system of equations, you need some variables to use in those equations.<br>
Making precise definitions of your variables is by far the most important part of setting up any problem.<br>
In this problem, you are asked to find how many shirts and how many pants she bought -- so the obvious variables are those numbers.  So<br>
let x = number of shirts
let y = number of pants<br>
With those definitions on your paper in front of you, it should be easy to write the system of equations you need.<br>
(1) The total number of shirts and pants is 26: {{{x+y = 26}}}
(2) The total cost of the shirts (x of them, at $125 each) and pants (y of them, at $225 each) is $4950:  (you get to write this equation....)<br>
Then solve the pair of equations by your favorite method....