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9 February, 23:50

Solution for x=5-y and x+y=15

Answers (1)
  1. 10 February, 03:27
    It might be no solution:




    substitute the x (which is the top problem) into the second one.

    (5-y) + y=15

    cancel it out

    (5-y) + y=15

    -5. - 5

    a negative plus a positive is gonna equal 0



    that is no solution ...
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