Practice: Expressions, Equations, and Variables

Knowing that Mariam wrote the equation 52.6+45.9=𝑥 such that the two numbers on the left side represent the weights of Mariam and her sister, then 𝑥 in the equation represents .

  • Athe weight of Mariam
  • Bthe weight of Mariam’s sister
  • Cthe difference between Mariam’s weight and her sister’s
  • Dthe sum of the weights of Mariam and her sister

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