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  • 13-09-2018
  • Mathematics
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Ion Know How Too Do This

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OmegaAzzy
OmegaAzzy OmegaAzzy
  • 13-09-2018

The correct answer is D. By adding 7 to both sides of the equation, it cancels out the digit on the left side, and changes the value of the digit on the right side. This does not, however, make the equation invalid, as the overall values are still equal.

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