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poodle

27/07/2018 at 01:45
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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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    jimin bts cute 27/07/2018 at 01:56

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

        \(=\left(-28\right)+\left(-8\right)\)

        \(=-36\)

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

       \(=129-119-301+12\)

       \(=10-301+12\)

      \(=\left(-291\right)+12\)

      \(=-279\)

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

      \(=300-\left(210+100\right)\)

      \(=300-310\)

      \(=-10\)

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

        \(=777+111+222+20\)

        \(=888+242\)

        \(=1130\)

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