Application of Matrices

[Gazza]

Help
Let n be a three digit number so that
-n is equal to 15 times the sum of its digits
-if the digits are reversed then the new number is equal to n+396 and
-the ones digit is 1 larger than the sum of the other two digits
Have to solve using Matrix methods?????????

 

[Deleted member 4993]

Help
Let n be a three digit number so that
-n is equal to 15 times the sum of its digits
-if the digits are reversed then the new number is equal to n+396 and
-the ones digit is 1 larger than the sum of the other two digits
Have to solve using Matrix methods?????????

Define 3 unknowns and Write three equations.

Assuming the number is in the decimal system, assume that the digits are x, y and z.

How can you express n as a function of x, y and z?

Write all the equations - form matrix - solve.

Please share your work with us .

If you are stuck at the beginning tell us and we'll start with the definitions such as "what is Matrix method"?"

You need to read the rules of this forum. Please read the post titled "Read before Posting" at the following URL:

http://www.freemathhelp.com/forum/th...217#post322217