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Algebra help

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m having an extremely tough time with integers in algebra when simplifying algebraic expressions. No matter which method I use I still end up confused and end up with a completely different answer.

Ex:

5t-{7t-[4r-3(t-7)]+6r}-4r

  • Algebra help -

    Start from the inside out.

    5t-{7t-[4r-3(t-7)]+6r}-4r

    5t-{7t-[4r-3t + 21]+6r}-4r

    5t-{7t-4r + 3t - 21+ 6r}-4r

    5t-7t + 4r - 3t + 21 - 6r - 4r

    Combine like terms.

    I hope this helps.

  • Algebra help -

    thanks this helps quite a bit.

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