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15 January, 18:26

Rewrite 7 - 9 as an equivalent addition expression:

7 + 9

-7 + 9

7 + (-9)

-7 + (-9)

+1
Answers (1)
  1. 15 January, 22:23
    0
    7-9 = - 2

    7 + (-9) is the right answer because the - in the - 9 cancels out the + sign causing the equation to change to 7-9.

    7-9=2
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