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Posted by on Tuesday, July 6, 2010 at 1:41pm.

8/30=x/75
solve for x

  • math - , Tuesday, July 6, 2010 at 2:18pm

    Cross multiply and you get 30x=600. 600/30 will give you your answer.

  • math - , Tuesday, July 6, 2010 at 2:24pm

    divide top and bottom of left by 2

    4/15 = x/75

    multiply both sides by 5

    4/3 = x/15

    then multiply both sides by 3

    4 =x/5

    now that it is manageable, multiply both sides by 5

    20 = x

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