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26 March, 08:06

Rianna thinks that if a=b and of c=d, then a+c=b+d. Is she correct?

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Answers (2)
  1. 26 March, 08:15
    0
    Substitute the A and C for B and D, so Yes she is correct.
  2. 26 March, 08:28
    0
    Hello

    rihanna had right, she is correct if a=b and of c=d, then a+c=b+d
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