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anonymous

  • one year ago

How would you solve ? -2(18 - 3y) = 7y + 2y

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  1. Photon336
    • one year ago
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    @moonlight123 whenever you have a number outside of the ( ) you distribute so you multiply what's on the outside by each term in the inside of the ( ) |dw:1443473951171:dw| |dw:1443473992971:dw| does this make sense?

  2. Photon336
    • one year ago
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    of course this is only the first step

  3. Photon336
    • one year ago
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    The second step is that we need to combine our terms, like terms. we see that we have 7y+2y so we add those two -36+6y = 7y+2y after we combine like terms we get the following below: -36+6y = 9y now we need to isolate y if we're going to solve for it and we do that by subtracting 6 y from both sides -36 = 9y-6y -36 = 3y we divide both sides by 3 and we get -36/3 = y = -12 from this we get y = -12 now we need to plug this back into our equation to check it. That's how we know this is correct. -36 = 3(-12) -36 = -36

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