Posted by **Kris** on Tuesday, February 24, 2009 at 7:05pm.

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 -
**Brandon**, Tuesday, February 24, 2009 at 7:22pm
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 -
**Kris**, Tuesday, February 24, 2009 at 8:20pm
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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