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math

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Solve the linear equation: x+x+2+x+4+x+6=-28. State the property that justifies your first step and why you chose it.
When I solved the equation I got the answer of
×=-10. However, I do not know what the property I need to state for my first step. Isn't it subtraction property of equality?
please help!!

  • math -

    combine like terms
    4 x + 12 = -28

    4 x = - 40

    x = -10

  • math -

    a game is watch by 60 adults and some are children. if there are 20 more adults than children how many children are watching the game

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