pre algebra

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When twice a number is decreased by 8, the result is the number increased by 7. How would you solve it and check answer into the original problem?

  • pre algebra -

    2x-8=x+7

    you solve for x. THen,when you have x (the number), you go back and put it in the original equation above and see if both sides are equal.

  • pre algebra -

    The product that is twice a number and 5 isthe same as the difference of nine timesthe number and5/3.find the number

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