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Mathematics, 14.12.2021 05:10, ari8160
13. If r + 9 = 42, does r + 9 – 9 = 42 +9? Why why not? I forgot to put spaces last time, and there's no negative numbers
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13. If r + 9 = 42, does r + 9 – 9 = 42 +9?
Why why not? I forgot to put spaces last time, and ther...
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