Algebra

My calculator is broken. The "+" key works correctly,but whenever I try to compute a-b, the calculator performs b-a instead. What answer does mny calculator compute for the expression ((7-10)+3)-5? Thank you!

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  1. ((7-10)+3)-5 ---> (10-7) + 3) - 5)
    = (-3+3) - 5 ----> (3-(-3)) - 5
    = 6-5 ----------> 5-6
    = -1

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