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Questions ( 5 )
  • Tính chu vi hình vuông  ABCD:

    A B C D

    AB=AC=CD=BD=9( cm)

  • find the natural x , know:

    219 - 7(x+1)=100

    (3x - 6).3=\(3^4\)

  • caculated:khocroikhocroikhocroi

    a, \(\left[\left(-13\right)+\left(-15\right)\right]+\left(-8\right)\)

    b, \(-\left(-129\right)+\left(-119\right)-301+12\)

    c, \(500-\left(-200\right)-210-100\)

    d,\(777-\left(-111\right)-\left(-222\right)+20\)

     

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