system of linear equation

Question

The sum of 3 numbers is 14
the largest is 4 times the smallest
the sum of the smallest and twice the largest is 18
what are the 3 numbers? show work?

A. how many unknowns you have?
-how many equations need to be solve for that many unknown?

B. what are the equations?

C. used the system of equations using matrices.

Answer 1

X = Smallest #.
4X = Largest @.
X+ 8X = 18.
9X = 18,

X = 2.
4X = 4*2 = 8.
14 - 10 = 4 = Middle #.

A. 1 unknown: X.

B. X = Smallest #.
4X = Largest #.
X + 8X = 18.

C.