Posted by YANETH on .
system of linear equation
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.

MATH 
Henry,
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.