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how do i solve this problem 2(2.5B-9)=-7 and 0.7w+16+4w=27.28

  • math -

    Multiply out the parenthese, and combine similar terms (constants and terms that are multiples of the unknown) on separate sides of the equation. For example
    2(2.5B-9) = -7
    5B -18 = 7
    5B = 25
    The last step should be obvious.

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