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March 28, 2017

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A number has four digits. the sum of the first and last digits is twice the second digit. The second digit is 2 less than the third digit. The last digit is twice the first. Some of the digits are alike. what is the number??

  • Math - ,

    This is a hard one. What helps me is to read each part of the problem carefully. Write the numbers you think on a piece of paper. When you find out if it is wrong put an x next to it. This will narrow down the process.

  • Math - ,

    i got the equations from my sister
    a+d= 2b
    b= c-2
    d=2a

    but what do i do next?

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