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2 March, 06:46

How do you solve 2z - 31 = - 9z + 24?

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Answers (2)
  1. 2 March, 07:04
    0
    2z - 31 = - 9z + 24

    +9z + 9z

    11z - 31 = 24

    +31 + 31

    11z = 55

    :11 : 11

    z = 5
  2. 2 March, 10:10
    0
    2z-31=-9z+24

    Add 9z to both sides.

    2z-31+9z=-9z+24+9z

    11z-31=24

    Add 31 to both sides.

    11z-31+31=24+31

    11z=55

    Divide both sides by 11.

    11z/11=55/11

    z=5
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