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18 January, 05:28

Use algebra tiles to find the difference. Let one yellow tile equal + 1 and one red tile equal - 1.

11 - 12

A. - 23

B. - 1

C. 23

D. - 3

+2
Answers (1)
  1. 18 January, 07:09
    0
    So you have 11 yellow tiles and 12 red tiles. Each yellow tile can be canceled out by a red tile. If you take 11 of each tile, you'll end up with one red tile, or - 1. B is your answer
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