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Algebra

For what values of a is the value of the binomial 2a−1 smaller than the value of the binomial 7−1.2a by 7?

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  1. really the same question as this one:

    http://www.jiskha.com/display.cgi?id=1463240595

    Just change the numbers

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  2. a=0.3125

    work:
    7-1.2a-(2a-1)=7
    a=0.3125

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  3. (7-1.2a)=(2a-1)+7
    8-3.2a=7
    -3.2a=-1
    3.2a=1
    a=1/3.2
    a=10/32
    a=5/16

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