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Math Help - A staggering algebra problem.

  1. #1
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    A staggering algebra problem.

    x+(300-2x)+(170-x)+(150-x)=500

    Need help with this problem. I know the solution is 200 but do not know how to achieve it.
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  2. #2
    Member TheMasterMind's Avatar
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    Quote Originally Posted by GeoBlockage View Post
    x+(300-2x)+(170-x)+(150-x)=500

    Need help with this problem. I know the solution is 200 but do not know how to achieve it.

    the solution in the book is wrong from what i am getting. show me your work.
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  3. #3
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    x+(300-x)+(170-x)+(150-x)=500

    620x-4x=500

    616x=500

    x=116
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  4. #4
    Member TheMasterMind's Avatar
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    Quote Originally Posted by GeoBlockage View Post
    x+(300-x)+(170-x)+(150-x)=500

    620x-4x=500

    616x=500

    x=116
    you must use the distributive law outside the brackets. when there is no number present in front of the bracket, you must add an imaginary 1.

    x+(300-x)+(170-x)+(150-x)=500

    <br />
x+1(300-x)+1(170-x)+1(150-x)=500

    x+300-x+170-x+150-x=500

    x-x-x-x=500-300-170-150

    -2x=-120

    <br />
x=60
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